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Table: nsc_dr1.exposure
(The bold columns are indexed columns)
Column NameDescriptionDatatype
airmassAirmassREAL
dateobsObservation timestamp. YYYY-MM-DDTHH:MM:SS.SSSSSSCHAR
decDeclination at center of frame, in degreesDOUBLE
decrmsRMS in WCS fit for DEC with respect to Gaia reference starsREAL
decstderrStandard error of WCS fit for DEC with respect to Gaia reference starsREAL
depth10sig10 sigma magnitude depthREAL
depth9595th percentile magnitude depthREAL
ebvMedian SFD E(B-V) of sources in this exposureREAL
expnumExposure numberINTEGER
exposureExposure nameCHAR
exptimeExposure time, in secondsREAL
filterFilter (u, g, r, i, z, Y, VR)CHAR
fwhmMedian FWHM of PSF (i.e. seeing) of frame, in arcsecondsREAL
instrumentInstrument name (c4d, k4m, ksb)CHAR
mjdObserved Modified Julian DateDOUBLE
nchipsNumber of chips with data for this exposureSMALLINT
ngaiamatchNumber of Gaia astrometric reference sources matchedINTEGER
nrefmatchNumber of photometric reference sources matchedINTEGER
nsourcesNumber of good sources in this exposureINTEGER
raRight ascension at center of frame, in degreesDOUBLE
rarmsRMS in WCS fit for RA with respect to Gaia reference starsREAL
rastderrStandard error of WCS fit for RA with respect to Gaia reference starsREAL
zptermZero-point offset used for this exposureREAL
zptermerrUncertainty of ZPTERMREAL
zptermsigRMS scatter of zero-point offset from multiple reference sourcesREAL
zptypeCalibration type: 1-external reference catalogs, 2-other NSC exposuresSMALLINT


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