Column Descriptions for the 2MASS Second Incremental Release Extended Source Catalog (XSC)

Column # Column Name Description Units Bytes Formata Nulls Allowed
1 hemis  hemisphere (N/S) of observation --- 5 5s n
2 date  observation date --- 8-13 6s n
3 scan  scan number (unique within date) --- 15-18 4hd n
4 coadd  3-digit coadded atlas image number (unique within scan) --- 20-23 4hd n
5 id  source ID number (unique within scan, image) --- 25-28 4d n
6 ra  right ascension (J2000 decimal deg) based on peak pixel deg 30-39 10.6f n
7 dec  declination (J2000 decimal deg) based on peak pixel deg 41-50 10.6f n
8 glon  galactic longitude (decimal deg) based on peak pixel deg 52-61 10.6f n
9 glat  galactic latitude (decimal deg) based on peak pixel deg 63-72 10.6f n
10 designation  source designation formed from sexigesimal coordinates --- 74-87 14s n
  Notes for designation: This is the object sequence designation, or object "name" as specified by the IAU recommendations on source nomenclature. It is derived from the J2000 sexigesimal coordinates of the source and has the form HHMMSSS+/-DDMMSS, where HH are the hours of right ascension, MM the RA minutes and SSS are the deci-seconds of RA. DD are the degrees in declination, MM are DEC minutes and SS the declination seconds. Note that both the RA deci-seconds of time and DEC seconds of arc are truncated rather than rounded, per the IAU recommendation.
11 x_coadd  x (cross-scan) position (image coord.) arcsec 89-93 5.1f n
12 y_coadd  y (in-scan) position (image coord.) arcsec 95-100 6.1f n
13 r_3sig  3-sigma K isophotal semi-major axis arcsec 102-106 5.1f y
14 j_ba  J minor/major axis ratio fit to the 3-sigma isophote --- 108-112 5.3f y
15 h_ba  H minor/major axis ratio fit to the 3-sigma isophote --- 114-118 5.3f y
16 k_ba  K minor/major axis ratio fit to the 3-sigma isophote --- 120-124 5.3f y
17 j_phi  J angle to 3-sigma major axis (E of N) deg 126-129 4hd y
18 h_phi  H angle to 3-sigma major axis (E of N) deg 131-134 4hd y
19 k_phi  K angle to 3-sigma major axis (E of N) deg 136-139 4hd y
20 j_m  J selected "default" magnitude mag 141-146 6.3f y
  Notes for j_m: This is the selected "default" magnitude for each band. The first choice for the [jhk]_m values are the mags in each band at 20 mag/sq.arcsec w/K fiducial circular aperture ([jhk]_m_k20fc), indicated by [jhk]_mtype values of 0. If, however, the K band mag in this group is > 14.0 (including negative flux or no mag found), all 3 [jhk]_m values will be the mags at 21 mag/sq.arcsec w/J fiducial circular aperture ([jhk]_m_j21fc) and the flags [jhk]_mtype are set to 1. If any one of chosen set of "default" mags is > 99, indicating no mag found, the DB entry for that "default" mag will be set to NULL. 
Thus, the [jhk]_mtype flags will indicate the source of the "default" mags and sigmas as follows:
0: [jhk]_m_k20fe values
1: [jhk]_m_j21fe values
21 h_m  H selected "default" magnitude mag 148-153 6.3f y
  Notes for h_m: This is the selected "default" magnitude for each band. The first choice for the [jhk]_m values are the mags in each band at 20 mag/sq.arcsec w/K fiducial circular aperture ([jhk]_m_k20fc), indicated by [jhk]_mtype values of 0. If, however, the K band mag in this group is > 14.0 (including negative flux or no mag found), all 3 [jhk]_m values will be the mags at 21 mag/sq.arcsec w/J fiducial circular aperture ([jhk]_m_j21fc) and the flags [jhk]_mtype are set to 1. If any one of chosen set of "default" mags is > 99, indicating no mag found, the DB entry for that "default" mag will be set to NULL. 
Thus, the [jhk]_mtype flags will indicate the source of the "default" mags and sigmas as follows:
0: [jhk]_m_k20fe values
1: [jhk]_m_j21fe values
22 k_m  K selected "default" magnitude mag 155-160 6.3f y
  Notes for k_m: This is the selected "default" magnitude for each band. The first choice for the [jhk]_m values are the mags in each band at 20 mag/sq.arcsec w/K fiducial circular aperture ([jhk]_m_k20fc), indicated by [jhk]_mtype values of 0. If, however, the K band mag in this group is > 14.0 (including negative flux or no mag found), all 3 [jhk]_m values will be the mags at 21 mag/sq.arcsec w/J fiducial circular aperture ([jhk]_m_j21fc) and the flags [jhk]_mtype are set to 1. If any one of chosen set of "default" mags is > 99, indicating no mag found, the DB entry for that "default" mag will be set to NULL. 
Thus, the [jhk]_mtype flags will indicate the source of the "default" mags and sigmas as follows:
0: [jhk]_m_k20fe values
1: [jhk]_m_j21fe values
23 j_msig  J "default" mag uncertainty mag 162-166 5.3f y
  Notes for j_msig: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
24 h_msig  H "default" mag uncertainty mag 168-172 5.3f y
  Notes for h_msig: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
25 k_msig  K "default" mag uncertainty mag 174-178 5.3f y
  Notes for k_msig: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
26 j_flg  J confusion flag for "default" magnitude --- 180-183 4hd y
  Notes for j_flg: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
27 h_flg  H confusion flag for "default" magnitude --- 185-188 4hd y
  Notes for h_flg: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
28 k_flg  K confusion flag for "default" magnitude --- 190-193 4hd y
  Notes for k_flg: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
29 j_mtype  source of J "default" mag (0=j_m_k20fc, 1=j_m_j21fc) --- 195-198 4hd n
30 h_mtype  source of H "default" mag (0=h_m_k20fc, 1=h_m_j21fc) --- 200-203 4hd n
31 k_mtype  source of K "default" mag (0=k_m_k20fc, 1=k_m_j21fc) --- 205-208 4hd n
32 j_r_e  J Kron elliptical aperture semi-major axis arcsec 210-214 5.1f y
33 h_r_e  H Kron elliptical aperture semi-major axis arcsec 216-220 5.1f y
34 k_r_e  K Kron elliptical aperture semi-major axis arcsec 222-226 5.1f y
35 j_m_e  J Kron elliptical aperture magnitude mag 228-233 6.3f y
36 h_m_e  H Kron elliptical aperture magnitude mag 235-240 6.3f y
37 k_m_e  K Kron elliptical aperture magnitude mag 242-247 6.3f y
38 j_msig_e  J 1-sigma uncertainty in Kron elliptical mag mag 249-253 5.3f y
  Notes for j_msig_e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
39 h_msig_e  H 1-sigma uncertainty in Kron elliptical mag mag 255-259 5.3f y
  Notes for h_msig_e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
40 k_msig_e  K 1-sigma uncertainty in Kron elliptical mag mag 261-265 5.3f y
  Notes for k_msig_e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
41 j_flg_e  J confusion flag for Kron elliptical mag --- 267-270 4hd y
  Notes for j_flg_e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
42 h_flg_e  H confusion flag for Kron elliptical mag --- 272-275 4hd y
  Notes for h_flg_e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
43 k_flg_e  K confusion flag for Kron elliptical mag --- 277-280 4hd y
  Notes for k_flg_e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
44 r_fe  K fiducial Kron elliptical aperture semi-major axis arcsec 282-286 5.1f y
  Notes for r_fe: "Fiducial" apertures are determined for each type of total and isophotal photometry measurements as described in the GALWORKS SDS. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
45 j_m_fe  J fiducial Kron elliptical aperture magnitude mag 288-293 6.3f y
46 h_m_fe  H fiducial Kron elliptical aperture magnitude mag 295-300 6.3f y
47 k_m_fe  K fiducial Kron elliptical aperture magnitude mag 302-307 6.3f y
48 j_msig_fe  J 1-sigma uncertainty in fiducial Kron ell. mag mag 309-313 5.3f y
  Notes for j_msig_fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
49 h_msig_fe  H 1-sigma uncertainty in fiducial Kron ell. mag mag 315-319 5.3f y
  Notes for h_msig_fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
50 k_msig_fe  K 1-sigma uncertainty in fiducial Kron ell. mag mag 321-325 5.3f y
  Notes for k_msig_fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
51 j_flg_fe  J confusion flag for fiducial Kron ell. mag --- 327-330 4hd y
  Notes for j_flg_fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
52 h_flg_fe  H confusion flag for fiducial Kron ell. mag --- 332-335 4hd y
  Notes for h_flg_fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
53 k_flg_fe  K confusion flag for fiducial Kron ell. mag --- 337-340 4hd y
  Notes for k_flg_fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
54 j_r_c  J Kron circular aperture radius arcsec 342-346 5.1f y
55 h_r_c  H Kron circular aperture radius arcsec 348-352 5.1f y
56 k_r_c  K Kron circular aperture radius arcsec 354-358 5.1f y
57 j_m_c  J Kron circular aperture magnitude mag 360-365 6.3f y
58 h_m_c  H Kron circular aperture magnitude mag 367-372 6.3f y
59 k_m_c  K Kron circular aperture magnitude mag 374-379 6.3f y
60 j_msig_c  J 1-sigma uncertainty in Kron circular mag mag 381-385 5.3f y
  Notes for j_msig_c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
61 h_msig_c  H 1-sigma uncertainty in Kron circular mag mag 387-391 5.3f y
  Notes for h_msig_c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
62 k_msig_c  K 1-sigma uncertainty in Kron circular mag mag 393-397 5.3f y
  Notes for k_msig_c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
63 j_flg_c  J confusion flag for Kron circular mag --- 399-402 4hd y
  Notes for j_flg_c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
64 h_flg_c  H confusion flag for Kron circular mag --- 404-407 4hd y
  Notes for h_flg_c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
65 k_flg_c  K confusion flag for Kron circular mag --- 409-412 4hd y
  Notes for k_flg_c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
66 r_fc  K fiducial Kron circular aperture radius arcsec 414-418 5.1f y
  Notes for r_fc: "Fiducial" apertures are determined for each type of total and isophotal photometry measurements as described in the GALWORKS SDS. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
67 j_m_fc  J fiducial Kron circular magnitude mag 420-425 6.3f y
68 h_m_fc  H fiducial Kron circular magnitude mag 427-432 6.3f y
69 k_m_fc  K fiducial Kron circular magnitude mag 434-439 6.3f y
70 j_msig_fc  J 1-sigma uncertainty in fiducial Kron circ. mag mag 441-445 5.3f y
  Notes for j_msig_fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
71 h_msig_fc  H 1-sigma uncertainty in fiducial Kron circ. mag mag 447-451 5.3f y
  Notes for h_msig_fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
72 k_msig_fc  K 1-sigma uncertainty in fiducial Kron circ. mag mag 453-457 5.3f y
  Notes for k_msig_fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
73 j_flg_fc  J confusion flag for fiducial Kron circ. mag --- 459-462 4hd y
  Notes for j_flg_fc: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
74 h_flg_fc  H confusion flag for fiducial Kron circ. mag --- 464-467 4hd y
  Notes for h_flg_fc: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
75 k_flg_fc  K confusion flag for fiducial Kron circ. mag --- 469-472 4hd y
  Notes for k_flg_fc: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
76 j_r_i20e  J 20mag/sq." isophotal elliptical ap. semi-major axis arcsec 474-478 5.1f y
77 h_r_i20e  H 20mag/sq." isophotal elliptical ap. semi-major axis arcsec 480-484 5.1f y
78 k_r_i20e  K 20mag/sq." isophotal elliptical ap. semi-major axis arcsec 486-490 5.1f y
79 j_m_i20e  J 20mag/sq." isophotal elliptical ap. magnitude mag 492-497 6.3f y
80 h_m_i20e  H 20mag/sq." isophotal elliptical ap. magnitude mag 499-504 6.3f y
81 k_m_i20e  K 20mag/sq." isophotal elliptical ap. magnitude mag 506-511 6.3f y
82 j_msig_i20e  J 1-sigma uncertainty in 20mag/sq." iso. ell. mag mag 513-517 5.3f y
  Notes for j_msig_i20e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
83 h_msig_i20e  H 1-sigma uncertainty in 20mag/sq." iso. ell. mag mag 519-523 5.3f y
  Notes for h_msig_i20e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
84 k_msig_i20e  K 1-sigma uncertainty in 20mag/sq." iso. ell. mag mag 525-529 5.3f y
  Notes for k_msig_i20e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
85 j_flg_i20e  J confusion flag for 20mag/sq." iso. ell. mag --- 531-534 4hd y
  Notes for j_flg_i20e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
86 h_flg_i20e  H confusion flag for 20mag/sq." iso. ell. mag --- 536-539 4hd y
  Notes for h_flg_i20e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
87 k_flg_i20e  K confusion flag for 20mag/sq." iso. ell. mag --- 541-544 4hd y
  Notes for k_flg_i20e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
88 r_k20fe  20mag/sq." isophotal K fiducial ell. ap. semi-major axis arcsec 546-550 5.1f y
  Notes for r_k20fe: "Fiducial" apertures are determined for each type of total and isophotal photometry measurements as described in the GALWORKS SDS. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
89 j_m_k20fe  J 20mag/sq." isophotal fiducial ell. ap. magnitude mag 552-557 6.3f y
90 h_m_k20fe  H 20mag/sq." isophotal fiducial ell. ap. magnitude mag 559-564 6.3f y
91 k_m_k20fe  K 20mag/sq." isophotal fiducial ell. ap. magnitude mag 566-571 6.3f y
92 j_msig_k20fe  J 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag mag 573-577 5.3f y
  Notes for j_msig_k20fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
93 h_msig_k20fe  H 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag mag 579-583 5.3f y
  Notes for h_msig_k20fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
94 k_msig_k20fe  K 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag mag 585-589 5.3f y
  Notes for k_msig_k20fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
95 j_flg_k20fe  J confusion flag for 20mag/sq." iso. fid. ell. mag --- 591-594 4hd y
  Notes for j_flg_k20fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
96 h_flg_k20fe  H confusion flag for 20mag/sq." iso. fid. ell. mag --- 596-599 4hd y
  Notes for h_flg_k20fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
97 k_flg_k20fe  K confusion flag for 20mag/sq." iso. fid. ell. mag --- 601-604 4hd y
  Notes for k_flg_k20fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
98 j_r_i20c  J 20mag/sq." isophotal circular aperture radius arcsec 606-610 5.1f y
99 h_r_i20c  H 20mag/sq." isophotal circular aperture radius arcsec 612-616 5.1f y
100 k_r_i20c  K 20mag/sq." isophotal circular aperture radius arcsec 618-622 5.1f y
101 j_m_i20c  J 20mag/sq." isophotal circular ap. magnitude mag 624-629 6.3f y
102 h_m_i20c  H 20mag/sq." isophotal circular ap. magnitude mag 631-636 6.3f y
103 k_m_i20c  K 20mag/sq." isophotal circular ap. magnitude mag 638-643 6.3f y
104 j_msig_i20c  J 1-sigma uncertainty in 20mag/sq." iso. circ. mag mag 645-649 5.3f y
  Notes for j_msig_i20c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
105 h_msig_i20c  H 1-sigma uncertainty in 20mag/sq." iso. circ. mag mag 651-655 5.3f y
  Notes for h_msig_i20c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
106 k_msig_i20c  K 1-sigma uncertainty in 20mag/sq." iso. circ. mag mag 657-661 5.3f y
  Notes for k_msig_i20c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
107 j_flg_i20c  J confusion flag for 20mag/sq." iso. circ. mag --- 663-666 4hd y
  Notes for j_flg_i20c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
108 h_flg_i20c  H confusion flag for 20mag/sq." iso. circ. mag --- 668-671 4hd y
  Notes for h_flg_i20c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
109 k_flg_i20c  K confusion flag for 20mag/sq." iso. circ. mag --- 673-676 4hd y
  Notes for k_flg_i20c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
110 r_k20fc  20mag/sq." isophotal K fiducial circular ap. radius arcsec 678-682 5.1f y
  Notes for r_k20fc: "Fiducial" apertures are determined for each type of total and isophotal photometry measurements as described in the GALWORKS SDS. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
111 j_m_k20fc  J 20mag/sq." isophotal fiducial circ. ap. mag mag 684-689 6.3f y
112 h_m_k20fc  H 20mag/sq." isophotal fiducial circ. ap. mag mag 691-696 6.3f y
113 k_m_k20fc  K 20mag/sq." isophotal fiducial circ. ap. mag mag 698-703 6.3f y
114 j_msig_k20fc  J 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag mag 705-709 5.3f y
  Notes for j_msig_k20fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
115 h_msig_k20fc  H 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag mag 711-715 5.3f y
  Notes for h_msig_k20fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
116 k_msig_k20fc  K 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag mag 717-721 5.3f y
  Notes for k_msig_k20fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
117 j_flg_k20fc  J confusion flag for 20mag/sq." iso. fid. circ. mag --- 723-726 4hd y
  Notes for j_flg_k20fc: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
118 h_flg_k20fc  H confusion flag for 20mag/sq." iso. fid. circ. mag --- 728-731 4hd y
  Notes for h_flg_k20fc: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
119 k_flg_k20fc  K confusion flag for 20mag/sq." iso. fid. circ. mag --- 733-736 4hd y
  Notes for k_flg_k20fc: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
120 j_r_i21e  J 21mag/sq." isophotal elliptical ap. semi-major axis arcsec 738-742 5.1f y
121 h_r_i21e  H 21mag/sq." isophotal elliptical ap. semi-major axis arcsec 744-748 5.1f y
122 k_r_i21e  K 21mag/sq." isophotal elliptical ap. semi-major axis arcsec 750-754 5.1f y
123 j_m_i21e  J 21mag/sq." isophotal elliptical ap. magnitude mag 756-761 6.3f y
124 h_m_i21e  H 21mag/sq." isophotal elliptical ap. magnitude mag 763-768 6.3f y
125 k_m_i21e  K 21mag/sq." isophotal elliptical ap. magnitude mag 770-775 6.3f y
126 j_msig_i21e  J 1-sigma uncertainty in 21mag/sq." iso. ell. mag mag 777-781 5.3f y
  Notes for j_msig_i21e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
127 h_msig_i21e  H 1-sigma uncertainty in 21mag/sq." iso. ell. mag mag 783-787 5.3f y
  Notes for h_msig_i21e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
128 k_msig_i21e  K 1-sigma uncertainty in 21mag/sq." iso. ell. mag mag 789-793 5.3f y
  Notes for k_msig_i21e: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
129 j_flg_i21e  J confusion flag for 21mag/sq." iso. ell. mag --- 795-798 4hd y
  Notes for j_flg_i21e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
130 h_flg_i21e  H confusion flag for 21mag/sq." iso. ell. mag --- 800-803 4hd y
  Notes for h_flg_i21e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
131 k_flg_i21e  K confusion flag for 21mag/sq." iso. ell. mag --- 805-808 4hd y
  Notes for k_flg_i21e: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
132 r_j21fe  21mag/sq." isophotal J fiducial ell. ap. semi-major axis arcsec 810-814 5.1f y
  Notes for r_j21fe: "Fiducial" apertures are determined for each type of total and isophotal photometry measurements as described in the GALWORKS SDS. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
133 j_m_j21fe  J 21mag/sq." isophotal fiducial ell. ap. magnitude mag 816-821 6.3f y
134 h_m_j21fe  H 21mag/sq." isophotal fiducial ell. ap. magnitude mag 823-828 6.3f y
135 k_m_j21fe  K 21mag/sq." isophotal fiducial ell. ap. magnitude mag 830-835 6.3f y
136 j_msig_j21fe  J 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag mag 837-841 5.3f y
  Notes for j_msig_j21fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
137 h_msig_j21fe  H 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag mag 843-847 5.3f y
  Notes for h_msig_j21fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
138 k_msig_j21fe  K 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag mag 849-853 5.3f y
  Notes for k_msig_j21fe: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
139 j_flg_j21fe  J confusion flag for 21mag/sq." iso. fid. ell. mag --- 855-858 4hd y
  Notes for j_flg_j21fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
140 h_flg_j21fe  H confusion flag for 21mag/sq." iso. fid. ell. mag --- 860-863 4hd y
  Notes for h_flg_j21fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
141 k_flg_j21fe  K confusion flag for 21mag/sq." iso. fid. ell. mag --- 865-868 4hd y
  Notes for k_flg_j21fe: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
142 j_r_i21c  J 21mag/sq." isophotal circular aperture radius arcsec 870-874 5.1f y
143 h_r_i21c  H 21mag/sq." isophotal circular aperture radius arcsec 876-880 5.1f y
144 k_r_i21c  K 21mag/sq." isophotal circular aperture radius arcsec 882-886 5.1f y
145 j_m_i21c  J 21mag/sq." isophotal circular ap. magnitude mag 888-893 6.3f y
146 h_m_i21c  H 21mag/sq." isophotal circular ap. magnitude mag 895-900 6.3f y
147 k_m_i21c  K 21mag/sq." isophotal circular ap. magnitude mag 902-907 6.3f y
148 j_msig_i21c  J 1-sigma uncertainty in 21mag/sq." iso. circ. mag mag 909-913 5.3f y
  Notes for j_msig_i21c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
149 h_msig_i21c  H 1-sigma uncertainty in 21mag/sq." iso. circ. mag mag 915-919 5.3f y
  Notes for h_msig_i21c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
150 k_msig_i21c  K 1-sigma uncertainty in 21mag/sq." iso. circ. mag mag 921-925 5.3f y
  Notes for k_msig_i21c: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
151 j_flg_i21c  J confusion flag for 21mag/sq." iso. circ. mag --- 927-930 4hd y
  Notes for j_flg_i21c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
152 h_flg_i21c  H confusion flag for 21mag/sq." iso. circ. mag --- 932-935 4hd y
  Notes for h_flg_i21c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
153 k_flg_i21c  K confusion flag for 21mag/sq." iso. circ. mag --- 937-940 4hd y
  Notes for k_flg_i21c: The confusion flags [jhk]_flg* for each mag are defined as follows:
0 if no other sources within aperture used 
1 if ap contained pixels masked off in atlas image 
2 if ap contained pixels masked off due to neighboring sources 
3 if ap contained pixels that had a point source flux subtracted off 
4 if ap contained pixels within bright star mask 
5 if ap contained pixels masked off due to persistence 
6 if aperture ran into atlas image boundary
7 if ap contained pixels within bright galaxy mask 
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
154 r_j21fc  21mag/sq." isophotal J fiducial circular ap. radius arcsec 942-946 5.1f y
  Notes for r_j21fc: "Fiducial" apertures are determined for each type of total and isophotal photometry measurements as described in the GALWORKS SDS. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
155 j_m_j21fc  J 21mag/sq." isophotal fiducial circ. ap. mag mag 948-953 6.3f y
156 h_m_j21fc  H 21mag/sq." isophotal fiducial circ. ap. mag mag 955-960 6.3f y
157 k_m_j21fc  K 21mag/sq." isophotal fiducial circ. ap. mag mag 962-967 6.3f y
158 j_msig_j21fc  J 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag mag 969-973 5.3f y
  Notes for j_msig_j21fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
159 h_msig_j21fc  H 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag mag 975-979 5.3f y
  Notes for h_msig_j21fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photometric zero point uncertainty and the flat-fielding uncertainty from the values listed.
160 k_msig_j21fc  K 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag mag 981-985 5.3f y
  Notes for k_msig_j21fc: All quoted magnitude uncertainties are the "combined" uncertainties for each band that provide an estimate of all random errors that contribute to the photometry. These uncertainties are the quadratic combination of the source extraction uncertainites, the photometric zero point offset uncertainties from the night during which the source was observed ([jhk]_zperr from the "Scan Data" table), and the residual flat-fielding errors (estimated to be 0.005 mags for all bands). The simple measurement uncertainty can be recovered by backing out the contributions of the photome