PSF_INST_MAG_SIG all NaN in pswarp .cmf files

[Michael Wood-Vasey]

pswarp doesn't seem to translate PSF_INST_MAG_SIG from the input CMF file to the output CMF file.

Joel Welling and I have been working on warping MOPS Megacam MEF chip images to a given skycell and then doing subtractions. In this process we've realized that the PSF_INST_MAG_SIG is not being translated properly between the proc/MEF files and the warped CMF files. PSF_INST_MAG and all of the other columns in the binary FITS table of the original CMF are being translated correctly. This was true in each of our individual warps as well as Paul's original warps done at the IfA.

[wwoodvas@serenity work] fdump 'proc/906622.cmf[44]' STDOUT PSF_INST_MAG,PSF_INST_MAG_SIG 100-110 prhead=no

PSF_INST_MAG PSF_INST_MAG_SIG

100 -1.1651719E+01 4.8224498E-03
101 -1.1625567E+01 4.9144300E-03
102 -1.1624426E+01 4.9266489E-03
103 -1.1586342E+01 5.0057173E-03
104 -1.1604173E+01 4.9859094E-03
105 -1.1597309E+01 5.0032125E-03
106 -1.1582771E+01 5.0470363E-03
107 -1.1575814E+01 5.0668400E-03
108 -1.1558278E+01 5.0968477E-03
109 -1.1556294E+01 5.1301736E-03
110 -1.1541912E+01 5.1773461E-03

[wwoodvas@serenity work] fdump skycell.0198755.new/906622.cmf STDOUT PSF_INST_MAG,PSF_INST_MAG_SIG 100-110 prhead=no

PSF_INST_MAG PSF_INST_MAG_SIG

100 -7.3885350E+00 INDEF
101 -7.3988523E+00 INDEF
102 -7.6355329E+00 INDEF
103 -7.3786430E+00 INDEF
104 -7.5089717E+00 INDEF
105 -7.5279927E+00 INDEF
106 -7.4888477E+00 INDEF
107 -7.3086233E+00 INDEF
108 -7.5065479E+00 INDEF
109 -7.4235153E+00 INDEF
110 -7.4822884E+00 INDEF

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This is true for all of the detections. Obviously these aren't the same detections, but the objects that do match do indeed have all of the same columns except for PSF_INST_MAG_SIG.

[Paul Price]

Check pswarpTransformSources.c

[Michael Wood-Vasey]

Joel is going to look at pswarpTransformSources.c and friends in detail on Thursday.