Date: Wed, 11 Feb 1998 19:25:14 -0800 (PST) Message-Id: <199802120325.TAA17607@colman.ipac.caltech.edu> To: 2mass Subject: 2MASS WG Mtg #142 Minutes Cc: chas, email@example.com, stiening, bgreen Content-Length: 3917 X-Lines: 99 Status: RO IPAC 2MASS Working Group Meeting #142 Minutes 2/10/98 Attendees: R. Beck, R. Cutri, T. Evans, J. Fowler, L. Fullmer, T. Jarrett, D. Kirkpatrick, G. Kopan, B. Light, J. Mazzarella, H. McCallon, B. Nelson, B. Wheaton, J. White AGENDA 1.) Southern Observatory Status 2.) 2MASS WG Meeting Schedule 3.) 2MAPPS 2.0 Test Status 4.) Soft-Saturation Image Status 5.) QA Database Queries 6.) Engineering Database Status DISCUSSION 1.) Southern Observatory Status R. Cutri reported that the southern observatory is currently expected to see first light on March 9. 2.) 2MASS WG Meeting Schedule R. Cutri reported that the IPAC 2MASS Working Group meeting on 24 February will be held in the upstairs conference room and will include discussions with Bill Green. 3.) 2MAPPS 2.0 Test Status The testing of 2MAPPS 2.0 has proceeded through the first night of the RTB, 980114n. Cognizant engineers are requested to examine data products relevant to their subsystems and make appropriate fixes and redeliveries. All tests are running on barney in /b1/OPS (e.g., the first night is in /b1/OPS/980114n). T. Evans reported that she had encountered a photometric anomaly in scan 135: the saturation count appears to be off for a J source needed for photometric estimation of a bright object via the first-persistence-object method. She and J. Fowler will try to track down the source of the problem. H. McCallon reported that three scans had failed in the pattern matching processing; the scans were incorrectly passed on for downstream processing, where band-to-band discrepancies appeared. This was fortuitous, since it provided information useful in locating most of the sources for the problem, but a complete fix has not yet been accomplished. R. Cutri reported that the subsystem cognizant science team members would give the acceptance reports at the March 2 meeting. They are to have their material ready for review one week prior to the meeting. 4.) Soft-Saturation Image Status J. White and J. Fowler reported that the code is ready for soft-saturation image utilization in RDFRAME, DARKS, and DFLAT. This refers to the use of individual pixel thresholds for tagging "saturation" (i.e., "soft" saturation or significant nonlinearity) rather than a single threshold for all pixels in a band. Since B. Wheaton has not yet completed the computation of the real thresholds, J. Fowler has created a soft-saturation image for each band that contains the previous single-number threshold for all pixels. These are in FITS format and named jsat.fits, hsat.fits, and ksat.fits; they will reside in the datan and datas directories above the observation-night level, from where EXEC and PCP will copy them to the obsdate/data and sdata directories for use in the pipeline. Although the dummy images have been delivered and EXEC will copy them as stated above, it was decided not to deliver the new versions of RDFRAME, DARKS, and DFLAT until some testing has been done in the DARKS test environment. The new version of RDFRAME also includes the code for recognizing missing-frame indicators in scan headers and returning an appropriate error code to the calling routine; the observatory is not yet writing such keywords in the headers, but this should cause no problem. 5.) QA Database Queries T. Evans and R. Cutri reported that a meeting will be held on February 11 in the upstairs conference room to discuss QA queries in the 2MASS Database. Interested parties are invited to attend. 6.) Engineering Database Status T. Evans reported that she and S. Wheelock will be distributing an email memo in the next day or so that discusses the current understanding, capabilities, and plans for support of engineering database analysis. Recipients are requested to review and comment on the material.