IV. 2MASS Data Processing

4. Point Source Detection and Photometry

b. Profile-Fit Photometry

Table 2: Correction parameters for the flux uncertainty

The tabulated quantities "delta" and "floor" represent the values of and , respectively, as a function of the PSFid as listed in the Point Source Catalog.

Hemis. Date Range J H Ks
North 970521 - 980604
PSFid   delta    floor

09531   0.0246   0.0202
09661   0.0267   0.0176
09911   0.0267   0.0144
10091   0.0260   0.0155
10311   0.0217   0.0139
10471   0.0188   0.0140
10711   0.0200   0.0127
10911   0.0200   0.0103
11091   0.0139   0.0109
11281   0.0137   0.0121
11491   0.0147   0.0109
11691   0.0138   0.0104
11871   0.0130   0.0101
12091   0.0121   0.0096
12311   0.0113   0.0092
12521   0.0106   0.0088
12711   0.0100   0.0085
12921   0.0094   0.0081
13071   0.0090   0.0079
13301   0.0084   0.0076
13501   0.0080   0.0073
13781   0.0074   0.0069
14031   0.0069   0.0066

PSFid   delta    floor

09471   0.0309   0.0232
09711   0.0320   0.0198
09891   0.0238   0.0179
10101   0.0225   0.0163
10301   0.0222   0.0148
10481   0.0234   0.0111
10691   0.0167   0.0137
10891   0.0177   0.0136
11101   0.0164   0.0130
11291   0.0153   0.0124
11501   0.0142   0.0119
11701   0.0133   0.0114
11861   0.0126   0.0110
12131   0.0115   0.0104
12291   0.0109   0.0101
12501   0.0102   0.0096
12721   0.0095   0.0092
12881   0.0090   0.0089
13081   0.0085   0.0086
13291   0.0079   0.0083
13511   0.0074   0.0079
13761   0.0069   0.0076
14041   0.0064   0.0072

PSFid   delta    floor

09261   0.0309   0.0187
09481   0.0248   0.0150
09701   0.0240   0.0147
09901   0.0216   0.0133
10081   0.0205   0.0126
10291   0.0224   0.0115
10501   0.0176   0.0123
10701   0.0155   0.0110
10901   0.0122   0.0104
11111   0.0151   0.0100
11301   0.0142   0.0096
11511   0.0134   0.0091
11711   0.0127   0.0088
11881   0.0121   0.0085
12101   0.0113   0.0081
12301   0.0107   0.0077
12511   0.0102   0.0074
12681   0.0097   0.0072
12891   0.0092   0.0069
13091   0.0087   0.0066
13311   0.0083   0.0064
13491   0.0079   0.0062
13771   0.0074   0.0058
14021   0.0069   0.0056
North 980605 - 980916
PSFid   delta    floor

09752   0.0330   0.0173
09902   0.0211   0.0180
10092   0.0270   0.0156
10302   0.0225   0.0140
10522   0.0239   0.0121
10692   0.0149   0.0151
10882   0.0167   0.0131
11082   0.0149   0.0126
11292   0.0133   0.0120
11472   0.0121   0.0115
11682   0.0108   0.0110
11882   0.0097   0.0105
12092   0.0087   0.0101
12322   0.0077   0.0096
12492   0.0071   0.0093
12912   0.0058   0.0086
13102   0.0053   0.0083
PSFid   delta    floor

09762   0.0326   0.0147
09932   0.0311   0.0148
10082   0.0295   0.0161
10312   0.0313   0.0145
10482   0.0295   0.0155
10672   0.0292   0.0115
10902   0.0267   0.0151
11072   0.0277   0.0128
11302   0.0270   0.0124
11482   0.0265   0.0121
11692   0.0260   0.0117
11902   0.0254   0.0113
12112   0.0249   0.0110
12282   0.0245   0.0108
12552   0.0239   0.0104
12782   0.0234   0.0100
13342   0.0223   0.0093
PSFid   delta    floor

10122   0.0293   0.0063
10272   0.0225   0.0110
10512   0.0269   0.0088
10702   0.0214   0.0087
10892   0.0196   0.0097
11092   0.0152   0.0137
11312   0.0163   0.0103
11502   0.0151   0.0104
11712   0.0139   0.0105
11872   0.0131   0.0106
12122   0.0119   0.0107
12332   0.0110   0.0108
12572   0.0100   0.0109
12832   0.0091   0.0110
13392   0.0075   0.0112


North 980919 - 990723
PSFid   delta    floor

09423   0.0353   0.0154
09523   0.0382   0.0170
09713   0.0335   0.0167
09903   0.0237   0.0172
10093   0.0241   0.0159
10303   0.0234   0.0146
10483   0.0204   0.0125
10703   0.0225   0.0105
10903   0.0182   0.0117
11103   0.0165   0.0106
11293   0.0196   0.0098
11503   0.0188   0.0095
11703   0.0180   0.0110
11913   0.0164   0.0128
12093   0.0158   0.0126
12323   0.0151   0.0123
12483   0.0147   0.0121
12663   0.0142   0.0120
12873   0.0137   0.0117
13083   0.0132   0.0115
13253   0.0128   0.0114
13493   0.0123   0.0112
13753   0.0117   0.0109
14043   0.0112   0.0107

PSFid   delta    floor

09383   0.0528   0.0152
09503   0.0371   0.0210
09733   0.0388   0.0187
09873   0.0317   0.0179
10083   0.0293   0.0171
10293   0.0292   0.0150
10463   0.0330   0.0120
10693   0.0296   0.0130
10883   0.0284   0.0119
11063   0.0261   0.0109
11323   0.0256   0.0121
11543   0.0285   0.0125
11713   0.0283   0.0121
11893   0.0282   0.0117
12103   0.0279   0.0112
12303   0.0277   0.0108
12513   0.0275   0.0104
12713   0.0273   0.0101
12883   0.0272   0.0098
13073   0.0270   0.0095
13303   0.0268   0.0091
13503   0.0266   0.0088
13763   0.0264   0.0085
14053   0.0262   0.0081

PSFid   delta    floor

09223   0.0273   0.0166
09273   0.0268   0.0165
09543   0.0289   0.0150
09683   0.0281   0.0149
09923   0.0252   0.0128
10073   0.0235   0.0101
10313   0.0220   0.0121
10493   0.0199   0.0126
10753   0.0249   0.0100
10923   0.0223   0.0128
11113   0.0201   0.0135
11303   0.0223   0.0093
11493   0.0222   0.0089
11693   0.0221   0.0085
11883   0.0220   0.0082
12113   0.0218   0.0078
12313   0.0217   0.0075
12503   0.0216   0.0072
12703   0.0215   0.0069
12903   0.0214   0.0067
13113   0.0213   0.0064
13313   0.0212   0.0062
13513   0.0211   0.0059
13743   0.0210   0.0057
14063   0.0208   0.0054
North 990913 - end
PSFid   delta    floor

09334   0.0409   0.0237
09524   0.0392   0.0222
09644   0.0365   0.0203
09874   0.0352   0.0174
10104   0.0307   0.0163
10304   0.0278   0.0157
10504   0.0273   0.0126
10724   0.0241   0.0177
10894   0.0225   0.0113
11104   0.0237   0.0108
11314   0.0219   0.0125
11504   0.0198   0.0089
11714   0.0182   0.0118
11884   0.0172   0.0113
12094   0.0162   0.0108
12304   0.0167   0.0159
12504   0.0143   0.0100
12714   0.0134   0.0096
12874   0.0128   0.0093
13104   0.0120   0.0089
13324   0.0113   0.0085
13504   0.0108   0.0082
13754   0.0101   0.0079
14004   0.0094   0.0075

PSFid   delta    floor

09154   0.0309   0.0331
09294   0.0333   0.0285
09464   0.0284   0.0279
09654   0.0254   0.0251
09884   0.0299   0.0227
10114   0.0239   0.0216
10314   0.0218   0.0201
10494   0.0221   0.0164
10704   0.0292   0.0149
10914   0.0191   0.0154
11094   0.0203   0.0170
11294   0.0228   0.0148
11494   0.0241   0.0132
11694   0.0179   0.0149
11894   0.0172   0.0143
12104   0.0164   0.0137
12314   0.0158   0.0131
12494   0.0152   0.0126
12724   0.0146   0.0121
12904   0.0141   0.0116
13114   0.0135   0.0112
13304   0.0131   0.0108
13524   0.0126   0.0104
13744   0.0121   0.0099
14054   0.0114   0.0094
PSFid   delta    floor

09344   0.0298   0.0168
09504   0.0323   0.0153
09704   0.0329   0.0163
09904   0.0275   0.0161
10074   0.0215   0.0137
10284   0.0151   0.0167
10514   0.0144   0.0109
10734   0.0209   0.0114
10924   0.0203   0.0139
11114   0.0205   0.0097
11334   0.0173   0.0130
11484   0.0165   0.0128
11684   0.0155   0.0125
11904   0.0144   0.0122
12114   0.0135   0.0120
12324   0.0127   0.0117
12514   0.0120   0.0115
12704   0.0114   0.0113
12884   0.0108   0.0111
13094   0.0102   0.0109
13264   0.0097   0.0107
13534   0.0090   0.0105
13764   0.0085   0.0103
14034   0.0079   0.0100

South 980318 - end
PSFid   delta    floor

09155   0.0293   0.0226
09315   0.0316   0.0199
09535   0.0340   0.0179
09695   0.0366   0.0177
09875   0.0328   0.0161
10075   0.0313   0.0167
10285   0.0289   0.0148
10515   0.0262   0.0140
10705   0.0272   0.0142
10885   0.0218   0.0121
11095   0.0182   0.0105
11355   0.0201   0.0161
11495   0.0233   0.0125
11695   0.0192   0.0143
11905   0.0245   0.0121
12085   0.0247   0.0121
12325   0.0184   0.0097
12505   0.0177   0.0094
12715   0.0169   0.0090
12905   0.0163   0.0087
13095   0.0157   0.0083
13275   0.0152   0.0081
13525   0.0144   0.0077
13755   0.0138   0.0074
14045   0.0131   0.0070
PSFid   delta    floor

09115   0.0344   0.0212
09325   0.0462   0.0197
09505   0.0469   0.0196
09715   0.0283   0.0201
09895   0.0264   0.0192
10085   0.0289   0.0174
10305   0.0293   0.0151
10495   0.0241   0.0139
10675   0.0273   0.0141
10905   0.0242   0.0148
11085   0.0248   0.0137
11285   0.0289   0.0162
11475   0.0252   0.0149
11705   0.0278   0.0184
11915   0.0243   0.0141
12105   0.0266   0.0154
12345   0.0235   0.0134
12615   0.0230   0.0130
13025   0.0238   0.0151
13415   0.0216   0.0119
13735   0.0212   0.0115
14075   0.0207   0.0111



PSFid   delta    floor

09355   0.0308   0.0189
09545   0.0304   0.0171
09705   0.0293   0.0170
09905   0.0291   0.0180
10095   0.0276   0.0170
10315   0.0302   0.0159
10505   0.0282   0.0143
10715   0.0261   0.0136
10915   0.0298   0.0142
11105   0.0220   0.0142
11315   0.0248   0.0109
11485   0.0283   0.0112
11725   0.0280   0.0145
11885   0.0280   0.0143
12125   0.0279   0.0141
12305   0.0279   0.0139
12515   0.0279   0.0136
12665   0.0278   0.0135
12865   0.0278   0.0133
13055   0.0278   0.0131
13295   0.0277   0.0129
13555   0.0277   0.0127
13705   0.0277   0.0125
14055   0.0276   0.0122


Return to Section IV.4b.