Description: Contains single epoch forced photometry of individual measurements of objects detected in the stacked images. The identifiers connecting the measurement back to the original image and to the object association are provided. PSF, aperture, and Kron (1980) photometry are included, along with sky and detector coordinate positions. References: Kron, R. G. 1980, ApJS, 43, 305.
Name
Unit
Data Type
Size
Default Value
Description
objID
dimensionless
BIGINT
8
NA
Unique object identifier.
uniquePspsFWid
dimensionless
BIGINT
8
NA
Unique internal PSPS forced warp identifier.
detectID
dimensionless
BIGINT
8
NA
Unique detection identifier.
ippObjID
dimensionless
BIGINT
8
NA
IPP internal object identifier.
ippDetectID
dimensionless
BIGINT
8
NA
IPP internal detection identifier.
filterID
dimensionless
TINYINT
1
NA
Filter identifier. Details in the Filter table.
surveyID
dimensionless
TINYINT
1
NA
Survey identifier. Details in the Survey table.
forcedSummaryID
dimensionless
BIGINT
8
NA
Unique forced warp summary identifier.
forcedWarpID
dimensionless
BIGINT
8
NA
Unique forced warp identifier.
randomWarpID
dimensionless
FLOAT
8
NA
Random value drawn from the interval between zero and one.
tessID
dimensionless
TINYINT
1
0
Tessellation identifier. Details in the TessellationType table.
projectionID
dimensionless
SMALLINT
2
-1
Projection cell identifier.
skyCellID
dimensionless
TINYINT
1
255
Skycell region identifier.
dvoRegionID
dimensionless
INT
4
-1
Internal DVO region identifier.
obsTime
days
FLOAT
8
-999
Modified Julian Date at the midpoint of the observation.
zp
magnitudes
REAL
4
0
Photometric zeropoint. Necessary for converting listed fluxes and magnitudes back to measured ADU counts.
telluricExt
magnitudes
REAL
4
NA
Estimated Telluric extinction due to non-photometric observing conditions. Necessary for converting listed fluxes and magnitudes back to measured ADU counts.
expTime
seconds
REAL
4
-999
Exposure time of the frame/exposure. Necessary for converting listed fluxes and magnitudes back to measured ADU counts.
airMass
dimensionless
REAL
4
0
Airmass at midpoint of the exposure. Necessary for converting listed fluxes and magnitudes back to measured ADU counts.
FpsfFlux
Janskys
REAL
4
-999
PSF flux.
FpsfFluxErr
Janskys
REAL
4
-999
Error in PSF flux.
xPosChip
raw pixels
REAL
4
-999
PSF x position in original chip pixels.
yPosChip
raw pixels
REAL
4
-999
PSF y position in original chip pixels.
FccdID
dimensionsless
SMALLINT
2
-999
OTA identifier of original chip (see ImageMeta).
FpsfMajorFWHM
arcsec
REAL
4
-999
PSF major axis FWHM.
FpsfMinorFWHM
arcsec
REAL
4
-999
PSF minor axis FWHM.
FpsfTheta
degrees
REAL
4
-999
PSF major axis orientation.
FpsfCore
dimensionless
REAL
4
-999
PSF core parameter k, where F = F0 / (1 + k r^2 + r^3.33).
FpsfQf
dimensionless
REAL
4
-999
PSF coverage factor.
FpsfQfPerfect
dimensionless
REAL
4
-999
PSF weighted fraction of pixels totally unmasked.
FpsfChiSq
dimensionless
REAL
4
-999
Reduced chi squared value of the PSF model fit.
FmomentXX
arcsec^2
REAL
4
-999
Second moment M_xx.
FmomentXY
arcsec^2
REAL
4
-999
Second moment M_xy.
FmomentYY
arcsec^2
REAL
4
-999
Second moment M_yy.
FmomentR1
arcsec
REAL
4
-999
First radial moment.
FmomentRH
arcsec^0.5
REAL
4
-999
Half radial moment (r^0.5 weighting).
FmomentM3C
arcsec^2
REAL
4
-999
Cosine of trefoil second moment term: r^2 cos(3 theta) = M_xxx - 3 * M_xyy.
FmomentM3S
arcsec^2
REAL
4
-999
Sine of trefoil second moment: r^2 sin (3 theta) = 3 * M_xxy - M_yyy.
FmomentM4C
arcsec^2
REAL
4
-999
Cosine of quadrupole second moment: r^2 cos (4 theta) = M_xxxx - 6 * M_xxyy + M_yyyy.
FmomentM4S
arcsec^2
REAL
4
-999
Sine of quadrupole second moment: r^2 sin (4 theta) = 4 * M_xxxy - 4 * M_xyyy.
FapFlux
Janskys
REAL
4
-999
Aperture flux.
FapFluxErr
Janskys
REAL
4
-999
Error in aperture flux.
FapFillF
dimensionless
REAL
4
-999
Aperture fill factor.
FapRadius
arcsec
REAL
4
-999
Aperture radius for forced warp detection.
FkronFlux
Janskys
REAL
4
-999
Kron (1980) flux.
FkronFluxErr
Janskys
REAL
4
-999
Error in Kron (1980) flux.
FkronRad
arcsec
REAL
4
-999
Kron (1980) radius.
Fsky
Janskys/arcsec^2
REAL
4
-999
Background sky level.
FskyErr
Janskys/arcsec^2
REAL
4
-999
Error in background sky level.
FinfoFlag
dimensionless
BIGINT
8
0
Information flag bitmask indicating details of the photometry. Values listed in DetectionFlags.
FinfoFlag2
dimensionless
INT
4
0
Information flag bitmask indicating details of the photometry. Values listed in DetectionFlags2.
FinfoFlag3
dimensionless
INT
4
0
Information flag bitmask indicating details of the photometry. Values listed in DetectionFlags3.