Individual spectroscopy parameters (see also the spSpec Data Model):

name	type	length	unit	ucd	description
specObjID	bigint	8		ID_CATALOG	Unique database ID based on PLATE, MJD, FIBERID, RUN2D
bestObjID	bigint	8		ID_MAIN	Object ID of photoObj match (position-based)
fluxObjID	bigint	8		ID_MAIN	Object ID of photoObj match (flux-based)
targetObjID	bigint	8		ID_CATALOG	Object ID of original target
plateID	bigint	8			Database ID of Plate
sciencePrimary	smallint	2			Best version of spectrum at this location (defines default view SpecObj)
sdssPrimary	smallint	2			Best version of spectrum at this location among SDSS plates
legacyPrimary	smallint	2			Best version of spectrum at this location, among Legacy plates
seguePrimary	smallint	2			Best version of spectrum at this location, among SEGUE plates
segue1Primary	smallint	2			Best version of spectrum at this location, among SEGUE-1 plates
segue2Primary	smallint	2			Best version of spectrum at this location, among SEGUE-1 plates
bossPrimary	smallint	2			Best version of spectrum at this location, among BOSS plates
bossSpecObjID	int	4			Index of BOSS observation in spAll flat file
firstRelease	varchar	32			Name of first release this object was associated with
survey	varchar	32			Survey name
instrument	varchar	32			Instrument used (SDSS or BOSS spectrograph)
programname	varchar	32			Program name
chunk	varchar	32			Chunk name
platerun	varchar	32			Plate drill run name
mjd	int	4	days		MJD of observation
plate	smallint	2			Plate number
fiberID	smallint	2			Fiber ID
run1d	varchar	32			1D Reduction version of spectrum
run2d	varchar	32			2D Reduction version of spectrum
tile	int	4			Tile number
designID	int	4			Design ID number
legacy_target1	bigint	8			for Legacy program, target selection information at plate design
legacy_target2	bigint	8			for Legacy program target selection information at plate design, secondary/qa/calibration
special_target1	bigint	8			for Special program target selection information at plate design
special_target2	bigint	8			for Special program target selection information at plate design, secondary/qa/calibration
segue1_target1	bigint	8			SEGUE-1 target selection information at plate design, primary science selection
segue1_target2	bigint	8			SEGUE-1 target selection information at plate design, secondary/qa/calib selection
segue2_target1	bigint	8			SEGUE-2 target selection information at plate design, primary science selection
segue2_target2	bigint	8			SEGUE-2 target selection information at plate design, secondary/qa/calib selection
boss_target1	bigint	8			BOSS target selection information at plate
ancillary_target1	bigint	8			BOSS ancillary science target selection information at plate design
ancillary_target2	bigint	8			BOSS ancillary target selection information at plate design
primTarget	bigint	8			target selection information at plate design, primary science selection (for backwards compatibility)
secTarget	bigint	8			target selection information at plate design, secondary/qa/calib selection (for backwards compatibility)
spectrographID	smallint	2			which spectrograph (1,2)
sourceType	varchar	128			For Legacy, SEGUE-2 and BOSS science targets, type of object targeted as (target bits contain full information and are recommended)
targetType	varchar	128			Nature of target: SCIENCE, STANDARD, or SKY
ra	float	8	deg		DR8 Right ascension of fiber, J2000
dec	float	8	deg		DR8 Declination of fiber, J2000
cx	float	8		POS_EQ_CART_X	x of Normal unit vector in J2000
cy	float	8		POS_EQ_CART_Y	y of Normal unit vector in J2000
cz	float	8		POS_EQ_CART_Z	z of Normal unit vector in J2000
xFocal	real	4	mm		X focal plane position (+RA direction)
yFocal	real	4	mm		Y focal plane position (+Dec direction)
lambdaEff	real	4	Angstroms		Effective wavelength that hole was drilled for (accounting for atmopheric refraction)
blueFiber	int	4			Set to 1 if this hole was designated a "blue fiber", 0 if designated a "red fiber" (high redshift LRGs are preferentially in "red fibers")
zOffset	real	4	microns		Washer thickness used (for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan)
z	real	4			Final Redshift
zErr	real	4			Redshift error
zWarning	int	4			Bitmask of warning values; 0 means all is well
class	varchar	32			Spectroscopic class (GALAXY, QSO, or STAR)
subClass	varchar	32			Spectroscopic subclass
rChi2	real	4			Reduced chi-squared of best fit
DOF	real	4			Degrees of freedom in best fit
rChi2Diff	real	4			Difference in reduced chi-squared between best and second best fit
z_noqso	real	4			Best redshift when excluding QSO fit (right redshift to use for galaxy targets)
zErr_noqso	real	4			Error in "z_noqso" redshift
zWarning_noqso	real	4			Warnings in "z_noqso" redshift
class_noqso	varchar	32			Classification in "z_noqso" redshift
subClass_noqso	varchar	32			Sub-classification in "z_noqso" redshift
rChi2Diff_noqso	real	4			Reduced chi-squared difference from next best redshift, for "z_noqso" redshift
z_person	real	4			Person-assigned redshift, if this object has been inspected
class_person	varchar	32			Person-assigned classification, if this object has been inspected
comments_person	varchar	200			Comments from person for inspected objects
tFile	varchar	32			File name of best fit template source
tColumn_0	smallint	2			Which column of the template file corresponds to template #0
tColumn_1	smallint	2			Which column of the template file corresponds to template #1
tColumn_2	smallint	2			Which column of the template file corresponds to template #2
tColumn_3	smallint	2			Which column of the template file corresponds to template #3
tColumn_4	smallint	2			Which column of the template file corresponds to template #4
tColumn_5	smallint	2			Which column of the template file corresponds to template #5
tColumn_6	smallint	2			Which column of the template file corresponds to template #6
tColumn_7	smallint	2			Which column of the template file corresponds to template #7
tColumn_8	smallint	2			Which column of the template file corresponds to template #8
tColumn_9	smallint	2			Which column of the template file corresponds to template #9
nPoly	real	4			Number of polynomial terms used in the fit
theta_0	real	4			Coefficient for template #0 of fit
theta_1	real	4			Coefficient for template #1 of fit
theta_2	real	4			Coefficient for template #2 of fit
theta_3	real	4			Coefficient for template #3 of fit
theta_4	real	4			Coefficient for template #4 of fit
theta_5	real	4			Coefficient for template #5 of fit
theta_6	real	4			Coefficient for template #6 of fit
theta_7	real	4			Coefficient for template #7 of fit
theta_8	real	4			Coefficient for template #8 of fit
theta_9	real	4			Coefficient for template #9 of fit
velDisp	real	4	km/s		Velocity dispersion
velDispErr	real	4	km/s		Error in velocity dispersion
velDispZ	real	4			Redshift associated with best fit velocity dispersion
velDispZErr	real	4			Error in redshift associated with best fit velocity dispersion
velDispChi2	real	4			Chi-squared associated with velocity dispersion fit
velDispNPix	int	4			Number of pixels overlapping best template in velocity dispersion fit
velDispDOF	int	4			Number of degrees of freedom in velocity dispersion fit
waveMin	real	4	Angstroms		Minimum observed (vacuum) wavelength
waveMax	real	4	Angstroms		Maximum observed (vacuum) wavelength
wCoverage	real	4			Coverage in wavelength, in units of log10 wavelength
snMedian_u	real	4			Median signal-to-noise over all good pixels in u-band
snMedian_g	real	4			Median signal-to-noise over all good pixels in g-band
snMedian_r	real	4			Median signal-to-noise over all good pixels in r-band
snMedian_i	real	4			Median signal-to-noise over all good pixels in i-band
snMedian_z	real	4			Median signal-to-noise over all good pixels in z-band
snMedian	real	4			Median signal-to-noise over all good pixels
chi68p	real	4			68-th percentile value of abs(chi) of the best-fit synthetic spectrum to the actual spectrum (around 1.0 for a good fit)
fracNSigma_1	real	4			Fraction of pixels deviant by more than 1 sigma relative to best-fit
fracNSigma_2	real	4			Fraction of pixels deviant by more than 2 sigma relative to best-fit
fracNSigma_3	real	4			Fraction of pixels deviant by more than 3 sigma relative to best-fit
fracNSigma_4	real	4			Fraction of pixels deviant by more than 4 sigma relative to best-fit
fracNSigma_5	real	4			Fraction of pixels deviant by more than 5 sigma relative to best-fit
fracNSigma_6	real	4			Fraction of pixels deviant by more than 6 sigma relative to best-fit
fracNSigma_7	real	4			Fraction of pixels deviant by more than 7 sigma relative to best-fit
fracNSigma_8	real	4			Fraction of pixels deviant by more than 8 sigma relative to best-fit
fracNSigma_9	real	4			Fraction of pixels deviant by more than 9 sigma relative to best-fit
fracNSigma_10	real	4			Fraction of pixels deviant by more than 10 sigma relative to best-fit
fracNSigHi_1	real	4			Fraction of pixels high by more than 1 sigma relative to best-fit
fracNSigHi_2	real	4			Fraction of pixels high by more than 2 sigma relative to best-fit
fracNSigHi_3	real	4			Fraction of pixels high by more than 3 sigma relative to best-fit
fracNSigHi_4	real	4			Fraction of pixels high by more than 4 sigma relative to best-fit
fracNSigHi_5	real	4			Fraction of pixels high by more than 5 sigma relative to best-fit
fracNSigHi_6	real	4			Fraction of pixels high by more than 6 sigma relative to best-fit
fracNSigHi_7	real	4			Fraction of pixels high by more than 7 sigma relative to best-fit
fracNSigHi_8	real	4			Fraction of pixels high by more than 8 sigma relative to best-fit
fracNSigHi_9	real	4			Fraction of pixels high by more than 9 sigma relative to best-fit
fracNSigHi_10	real	4			Fraction of pixels high by more than 10 sigma relative to best-fit
fracNSigLo_1	real	4			Fraction of pixels low by more than 1 sigma relative to best-fit
fracNSigLo_2	real	4			Fraction of pixels low by more than 2 sigma relative to best-fit
fracNSigLo_3	real	4			Fraction of pixels low by more than 3 sigma relative to best-fit
fracNSigLo_4	real	4			Fraction of pixels low by more than 4 sigma relative to best-fit
fracNSigLo_5	real	4			Fraction of pixels low by more than 5 sigma relative to best-fit
fracNSigLo_6	real	4			Fraction of pixels low by more than 6 sigma relative to best-fit
fracNSigLo_7	real	4			Fraction of pixels low by more than 7 sigma relative to best-fit
fracNSigLo_8	real	4			Fraction of pixels low by more than 8 sigma relative to best-fit
fracNSigLo_9	real	4			Fraction of pixels low by more than 9 sigma relative to best-fit
fracNSigLo_10	real	4			Fraction of pixels low by more than 10 sigma relative to best-fit
spectroFlux_u	real	4	nanomaggies		Spectrum projected onto u filter
spectroFlux_g	real	4	nanomaggies		Spectrum projected onto g filter
spectroFlux_r	real	4	nanomaggies		Spectrum projected onto r filter
spectroFlux_i	real	4	nanomaggies		Spectrum projected onto i filter
spectroFlux_z	real	4	nanomaggies		Spectrum projected onto z filter
spectroSynFlux_u	real	4	nanomaggies		Best-fit template spectrum projected onto u filter
spectroSynFlux_g	real	4	nanomaggies		Best-fit template spectrum projected onto g filter
spectroSynFlux_r	real	4	nanomaggies		Best-fit template spectrum projected onto r filter
spectroSynFlux_i	real	4	nanomaggies		Best-fit template spectrum projected onto i filter
spectroSynFlux_z	real	4	nanomaggies		Best-fit template spectrum projected onto z filter
spectroFluxIvar_u	real	4	1/nanomaggies^2		Inverse variance of spectrum projected onto u filter
spectroFluxIvar_g	real	4	1/nanomaggies^2		Inverse variance of spectrum projected onto g filter
spectroFluxIvar_r	real	4	1/nanomaggies^2		Inverse variance of spectrum projected onto r filter
spectroFluxIvar_i	real	4	1/nanomaggies^2		Inverse variance of spectrum projected onto i filter
spectroFluxIvar_z	real	4	1/nanomaggies^2		Inverse variance of spectrum projected onto z filter
spectroSynFluxIvar_u	real	4	1/nanomaggies^2		Inverse variance of best-fit template spectrum projected onto u filter
spectroSynFluxIvar_g	real	4	1/nanomaggies^2		Inverse variance of best-fit template spectrum projected onto g filter
spectroSynFluxIvar_r	real	4	1/nanomaggies^2		Inverse variance of best-fit template spectrum projected onto r filter
spectroSynFluxIvar_i	real	4	1/nanomaggies^2		Inverse variance of best-fit template spectrum projected onto i filter
spectroSynFluxIvar_z	real	4	1/nanomaggies^2		Inverse variance of best-fit template spectrum projected onto z filter
spectroSkyFlux_u	real	4	nanomaggies		Sky spectrum projected onto u filter
spectroSkyFlux_g	real	4	nanomaggies		Sky spectrum projected onto g filter
spectroSkyFlux_r	real	4	nanomaggies		Sky spectrum projected onto r filter
spectroSkyFlux_i	real	4	nanomaggies		Sky spectrum projected onto i filter
spectroSkyFlux_z	real	4	nanomaggies		Sky spectrum projected onto z filter
anyAndMask	int	4			For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
anyOrMask	int	4			For each bit, records whether any pixel in the spectrum has that bit set in its ORMASK
plateSN2	real	4			Overall signal-to-noise-squared measure for plate (only set for SDSS spectrograph)
deredSN2	real	4			Dereddened signal-to-noise-squared measure for plate (only set for BOSS spectrograph)
snTurnoff	real	4			Signal to noise measure for MS turnoff stars on plate (-9999 if not appropriate)
sn1_g	real	4			(S/N)^2 at g=20.20 for spectrograph #1
sn1_r	real	4			(S/N)^2 at r=20.25 for spectrograph #1
sn1_i	real	4			(S/N)^2 at i=19.90 for spectrograph #1
sn2_g	real	4			(S/N)^2 at g=20.20 for spectrograph #2
sn2_r	real	4			(S/N)^2 at r=20.25 for spectrograph #2
sn2_i	real	4			(S/N)^2 at i=19.90 for spectrograph #2
elodieFileName	varchar	32			File name for best-fit Elodie star
elodieObject	varchar	32			Star name (mostly Henry Draper names)
elodieSpType	varchar	32			Spectral type
elodieBV	real	4	mag		(B-V) color
elodieTEff	real	4	Kelvin		Effective temperature
elodieLogG	real	4			log10(gravity)
elodieFeH	real	4			Metallicity ([Fe/H])
elodieZ	real	4			Redshift
elodieZErr	real	4			Redshift error (negative for invalid fit)
elodieZModelErr	real	4			Standard deviation in redshift among the 12 best-fit stars
elodieRChi2	real	4			Reduced chi^2
elodieDOF	real	4			Degrees of freedom for fit
htmID	bigint	8		CODE_HTM	20 deep Hierarchical Triangular Mesh ID
loadVersion	int	4		ID_TRACER	Load Version
img	varbinary	-1		IMAGE?	Spectrum Image

Imaging Parameters

Which imaging parameters do you want returned from your query?

Note: "Target Imaging" refers to the imaging data (run) and/or processing (rerun) combination used in selecting targets for spectroscopic followup; "Best Imaging" refers to the "latest and greatest" run/rerun combination and therefore generally supersedes the run/rerun combination of "Target Imaging".

Caveat: In rare instances the "Best Imaging" object matched to a spectrum may NOT correspond to the original "Target Imaging" object. For example, this may occur when there were deblending problems in the "Target Imaging", such as when a bright off-center HII region was targeted instead of the parent galaxy, and where that HII region is then properly treated in the "Best Imaging" and is no longer a cataloged object. When in doubt, please compare the magnitudes and coordinates of the "Target Imaging" and "Best Imaging" objects.

Useful imaging parameter combinations:

The SDSSname parameter returns the official IAU SDSS designation for the object, in the format:

Individual imaging parameters (see also the tsObj Data Model):

name	type	length	unit	ucd	description
objID	bigint	8			Unique SDSS identifier composed from [skyVersion,rerun,run,camcol,field,obj].
skyVersion	tinyint	1			Layer of catalog (currently only one layer, 0; 0-15 available)
run	smallint	2			Run number
rerun	smallint	2			Rerun number
camcol	tinyint	1			Camera column
field	smallint	2			Field number
obj	smallint	2			The object id within a field. Usually changes between reruns of the same field
mode	tinyint	1			1: primary, 2: secondary, 3: other
nChild	smallint	2			Number of children if this is a composite object that has been deblended. BRIGHT (in a flags sense) objects also have nchild == 1, the non-BRIGHT sibling.
type	smallint	2			Type classification of the object (star, galaxy, cosmic ray, etc.)
clean	int	4			Clean photometry flag (1=clean, 0=unclean).
probPSF	real	4			Probability that the object is a star. Currently 0 if type == 3 (galaxy), 1 if type == 6 (star).
insideMask	tinyint	1			Flag to indicate whether object is inside a mask and why
flags	bigint	8			Photo Object Attribute Flags
rowc	real	4	pix		Row center position (r-band coordinates)
rowcErr	real	4	pix		Row center position error (r-band coordinates)
colc	real	4	pix		Column center position (r-band coordinates)
colcErr	real	4	pix		Column center position error (r-band coordinates)
rowv	real	4	deg/day		Row-component of object's velocity
rowvErr	real	4	deg/day		Row-component of object's velocity error
colv	real	4	deg/day		Column-component of object's velocity
colvErr	real	4	deg/day		Column-component of object's velocity error
rowc_u	real	4	pix		Row center, u-band
rowc_g	real	4	pix		Row center, g-band
rowc_r	real	4	pix		Row center, r-band
rowc_i	real	4	pix		Row center, i-band
rowc_z	real	4	pix		Row center, z-band
rowcErr_u	real	4	pix		ERROR Row center error, u-band
rowcErr_g	real	4	pix		ERROR Row center error, g-band
rowcErr_r	real	4	pix		ERROR Row center error, r-band
rowcErr_i	real	4	pix		ERROR Row center error, i-band
rowcErr_z	real	4	pix		ERROR Row center error, z-band
colc_u	real	4	pix		Column center, u-band
colc_g	real	4	pix		Column center, g-band
colc_r	real	4	pix		Column center, r-band
colc_i	real	4	pix		Column center, i-band
colc_z	real	4	pix		Column center, z-band
colcErr_u	real	4	pix		Column center error, u-band
colcErr_g	real	4	pix		Column center error, g-band
colcErr_r	real	4	pix		Column center error, r-band
colcErr_i	real	4	pix		Column center error, i-band
colcErr_z	real	4	pix		Column center error, z-band
sky_u	real	4	nanomaggies/arcsec^2		Sky flux at the center of object (allowing for siblings if blended).
sky_g	real	4	nanomaggies/arcsec^2		Sky flux at the center of object (allowing for siblings if blended).
sky_r	real	4	nanomaggies/arcsec^2		Sky flux at the center of object (allowing for siblings if blended).
sky_i	real	4	nanomaggies/arcsec^2		Sky flux at the center of object (allowing for siblings if blended).
sky_z	real	4	nanomaggies/arcsec^2		Sky flux at the center of object (allowing for siblings if blended).
skyIvar_u	real	4	nanomaggies/arcsec^2		Sky flux inverse variance
skyIvar_g	real	4	nanomaggies/arcsec^2		Sky flux inverse variance
skyIvar_r	real	4	nanomaggies/arcsec^2		Sky flux inverse variance
skyIvar_i	real	4	nanomaggies/arcsec^2		Sky flux inverse variance
skyIvar_z	real	4	nanomaggies/arcsec^2		Sky flux inverse variance
psfMag_u	real	4	mag		PSF magnitude
psfMag_g	real	4	mag		PSF magnitude
psfMag_r	real	4	mag		PSF magnitude
psfMag_i	real	4	mag		PSF magnitude
psfMag_z	real	4	mag		PSF magnitude
psfMagErr_u	real	4	mag		PSF magnitude error
psfMagErr_g	real	4	mag		PSF magnitude error
psfMagErr_r	real	4	mag		PSF magnitude error
psfMagErr_i	real	4	mag		PSF magnitude error
psfMagErr_z	real	4	mag		PSF magnitude error
fiberMag_u	real	4	mag		Magnitude in 3 arcsec diameter fiber radius
fiberMag_g	real	4	mag		Magnitude in 3 arcsec diameter fiber radius
fiberMag_r	real	4	mag		Magnitude in 3 arcsec diameter fiber radius
fiberMag_i	real	4	mag		Magnitude in 3 arcsec diameter fiber radius
fiberMag_z	real	4	mag		Magnitude in 3 arcsec diameter fiber radius
fiberMagErr_u	real	4	mag		Error in magnitude in 3 arcsec diameter fiber radius
fiberMagErr_g	real	4	mag		Error in magnitude in 3 arcsec diameter fiber radius
fiberMagErr_r	real	4	mag		Error in magnitude in 3 arcsec diameter fiber radius
fiberMagErr_i	real	4	mag		Error in magnitude in 3 arcsec diameter fiber radius
fiberMagErr_z	real	4	mag		Error in magnitude in 3 arcsec diameter fiber radius
fiber2Mag_u	real	4	mag		Magnitude in 2 arcsec diameter fiber radius
fiber2Mag_g	real	4	mag		Magnitude in 2 arcsec diameter fiber radius
fiber2Mag_r	real	4	mag		Magnitude in 2 arcsec diameter fiber radius
fiber2Mag_i	real	4	mag		Magnitude in 2 arcsec diameter fiber radius
fiber2Mag_z	real	4	mag		Magnitude in 2 arcsec diameter fiber radius
fiber2MagErr_u	real	4	mag		Error in magnitude in 2 arcsec diameter fiber radius
fiber2MagErr_g	real	4	mag		Error in magnitude in 2 arcsec diameter fiber radius
fiber2MagErr_r	real	4	mag		Error in magnitude in 2 arcsec diameter fiber radius
fiber2MagErr_i	real	4	mag		Error in magnitude in 2 arcsec diameter fiber radius
fiber2MagErr_z	real	4	mag		Error in magnitude in 2 arcsec diameter fiber radius
petroMag_u	real	4	mag		Petrosian magnitude
petroMag_g	real	4	mag		Petrosian magnitude
petroMag_r	real	4	mag		Petrosian magnitude
petroMag_i	real	4	mag		Petrosian magnitude
petroMag_z	real	4	mag		Petrosian magnitude
petroMagErr_u	real	4	mag		Petrosian magnitude error
petroMagErr_g	real	4	mag		Petrosian magnitude error
petroMagErr_r	real	4	mag		Petrosian magnitude error
petroMagErr_i	real	4	mag		Petrosian magnitude error
petroMagErr_z	real	4	mag		Petrosian magnitude error
psfFlux_u	real	4	nanomaggies		PSF flux
psfFlux_g	real	4	nanomaggies		PSF flux
psfFlux_r	real	4	nanomaggies		PSF flux
psfFlux_i	real	4	nanomaggies		PSF flux
psfFlux_z	real	4	nanomaggies		PSF flux
psfFluxIvar_u	real	4	nanomaggies^{-2}		PSF flux inverse variance
psfFluxIvar_g	real	4	nanomaggies^{-2}		PSF flux inverse variance
psfFluxIvar_r	real	4	nanomaggies^{-2}		PSF flux inverse variance
psfFluxIvar_i	real	4	nanomaggies^{-2}		PSF flux inverse variance
psfFluxIvar_z	real	4	nanomaggies^{-2}		PSF flux inverse variance
fiberFlux_u	real	4	nanomaggies		Flux in 3 arcsec diameter fiber radius
fiberFlux_g	real	4	nanomaggies		Flux in 3 arcsec diameter fiber radius
fiberFlux_r	real	4	nanomaggies		Flux in 3 arcsec diameter fiber radius
fiberFlux_i	real	4	nanomaggies		Flux in 3 arcsec diameter fiber radius
fiberFlux_z	real	4	nanomaggies		Flux in 3 arcsec diameter fiber radius
fiberFluxIvar_u	real	4	nanomaggies^{-2}		Inverse variance in flux in 3 arcsec diameter fiber radius
fiberFluxIvar_g	real	4	nanomaggies^{-2}		Inverse variance in flux in 3 arcsec diameter fiber radius
fiberFluxIvar_r	real	4	nanomaggies^{-2}		Inverse variance in flux in 3 arcsec diameter fiber radius
fiberFluxIvar_i	real	4	nanomaggies^{-2}		Inverse variance in flux in 3 arcsec diameter fiber radius
fiberFluxIvar_z	real	4	nanomaggies^{-2}		Inverse variance in flux in 3 arcsec diameter fiber radius
fiber2Flux_u	real	4	nanomaggies		Flux in 2 arcsec diameter fiber radius
fiber2Flux_g	real	4	nanomaggies		Flux in 2 arcsec diameter fiber radius
fiber2Flux_r	real	4	nanomaggies		Flux in 2 arcsec diameter fiber radius
fiber2Flux_i	real	4	nanomaggies		Flux in 2 arcsec diameter fiber radius
fiber2Flux_z	real	4	nanomaggies		Flux in 2 arcsec diameter fiber radius
fiber2FluxIvar_u	real	4	nanomaggies^{-2}		Inverse variance in flux in 2 arcsec diameter fiber radius
fiber2FluxIvar_g	real	4	nanomaggies^{-2}		Inverse variance in flux in 2 arcsec diameter fiber radius
fiber2FluxIvar_r	real	4	nanomaggies^{-2}		Inverse variance in flux in 2 arcsec diameter fiber radius
fiber2FluxIvar_i	real	4	nanomaggies^{-2}		Inverse variance in flux in 2 arcsec diameter fiber radius
fiber2FluxIvar_z	real	4	nanomaggies^{-2}		Inverse variance in flux in 2 arcsec diameter fiber radius
petroFlux_u	real	4	nanomaggies		Petrosian flux
petroFlux_g	real	4	nanomaggies		Petrosian flux
petroFlux_r	real	4	nanomaggies		Petrosian flux
petroFlux_i	real	4	nanomaggies		Petrosian flux
petroFlux_z	real	4	nanomaggies		Petrosian flux
petroFluxIvar_u	real	4	nanomaggies^{-2}		Petrosian flux inverse variance
petroFluxIvar_g	real	4	nanomaggies^{-2}		Petrosian flux inverse variance
petroFluxIvar_r	real	4	nanomaggies^{-2}		Petrosian flux inverse variance
petroFluxIvar_i	real	4	nanomaggies^{-2}		Petrosian flux inverse variance
petroFluxIvar_z	real	4	nanomaggies^{-2}		Petrosian flux inverse variance
petroRad_u	real	4	arcsec		Petrosian radius
petroRad_g	real	4	arcsec		Petrosian radius
petroRad_r	real	4	arcsec		Petrosian radius
petroRad_i	real	4	arcsec		Petrosian radius
petroRad_z	real	4	arcsec		Petrosian radius
petroRadErr_u	real	4	arcsec		Petrosian radius error
petroRadErr_g	real	4	arcsec		Petrosian radius error
petroRadErr_r	real	4	arcsec		Petrosian radius error
petroRadErr_i	real	4	arcsec		Petrosian radius error
petroRadErr_z	real	4	arcsec		Petrosian radius error
petroR50_u	real	4	arcsec		Radius containing 50% of Petrosian flux
petroR50_g	real	4	arcsec		Radius containing 50% of Petrosian flux
petroR50_r	real	4	arcsec		Radius containing 50% of Petrosian flux
petroR50_i	real	4	arcsec		Radius containing 50% of Petrosian flux
petroR50_z	real	4	arcsec		Radius containing 50% of Petrosian flux
petroR50Err_u	real	4	arcsec		Error in radius with 50% of Petrosian flux error
petroR50Err_g	real	4	arcsec		Error in radius with 50% of Petrosian flux error
petroR50Err_r	real	4	arcsec		Error in radius with 50% of Petrosian flux error
petroR50Err_i	real	4	arcsec		Error in radius with 50% of Petrosian flux error
petroR50Err_z	real	4	arcsec		Error in radius with 50% of Petrosian flux error
petroR90_u	real	4	arcsec		Radius containing 90% of Petrosian flux
petroR90_g	real	4	arcsec		Radius containing 90% of Petrosian flux
petroR90_r	real	4	arcsec		Radius containing 90% of Petrosian flux
petroR90_i	real	4	arcsec		Radius containing 90% of Petrosian flux
petroR90_z	real	4	arcsec		Radius containing 90% of Petrosian flux
petroR90Err_u	real	4	arcsec		Error in radius with 90% of Petrosian flux error
petroR90Err_g	real	4	arcsec		Error in radius with 90% of Petrosian flux error
petroR90Err_r	real	4	arcsec		Error in radius with 90% of Petrosian flux error
petroR90Err_i	real	4	arcsec		Error in radius with 90% of Petrosian flux error
petroR90Err_z	real	4	arcsec		Error in radius with 90% of Petrosian flux error
q_u	real	4			Stokes Q parameter
q_g	real	4			Stokes Q parameter
q_r	real	4			Stokes Q parameter
q_i	real	4			Stokes Q parameter
q_z	real	4			Stokes Q parameter
qErr_u	real	4			Stokes Q parameter error
qErr_g	real	4			Stokes Q parameter error
qErr_r	real	4			Stokes Q parameter error
qErr_i	real	4			Stokes Q parameter error
qErr_z	real	4			Stokes Q parameter error
u_u	real	4			Stokes U parameter
u_g	real	4			Stokes U parameter
u_r	real	4			Stokes U parameter
u_i	real	4			Stokes U parameter
u_z	real	4			Stokes U parameter
uErr_u	real	4			Stokes U parameter error
uErr_g	real	4			Stokes U parameter error
uErr_r	real	4			Stokes U parameter error
uErr_i	real	4			Stokes U parameter error
uErr_z	real	4			Stokes U parameter error
mE1_u	real	4			Adaptive E1 shape measure (pixel coordinates)
mE1_g	real	4			Adaptive E1 shape measure (pixel coordinates)
mE1_r	real	4			Adaptive E1 shape measure (pixel coordinates)
mE1_i	real	4			Adaptive E1 shape measure (pixel coordinates)
mE1_z	real	4			Adaptive E1 shape measure (pixel coordinates)
mE2_u	real	4			Adaptive E2 shape measure (pixel coordinates)
mE2_g	real	4			Adaptive E2 shape measure (pixel coordinates)
mE2_r	real	4			Adaptive E2 shape measure (pixel coordinates)
mE2_i	real	4			Adaptive E2 shape measure (pixel coordinates)
mE2_z	real	4			Adaptive E2 shape measure (pixel coordinates)
mE1E1Err_u	real	4			Covariance in E1/E1 shape measure (pixel coordinates)
mE1E1Err_g	real	4			Covariance in E1/E1 shape measure (pixel coordinates)
mE1E1Err_r	real	4			Covariance in E1/E1 shape measure (pixel coordinates)
mE1E1Err_i	real	4			Covariance in E1/E1 shape measure (pixel coordinates)
mE1E1Err_z	real	4			Covariance in E1/E1 shape measure (pixel coordinates)
mE1E2Err_u	real	4			Covariance in E1/E2 shape measure (pixel coordinates)
mE1E2Err_g	real	4			Covariance in E1/E2 shape measure (pixel coordinates)
mE1E2Err_r	real	4			Covariance in E1/E2 shape measure (pixel coordinates)
mE1E2Err_i	real	4			Covariance in E1/E2 shape measure (pixel coordinates)
mE1E2Err_z	real	4			Covariance in E1/E2 shape measure (pixel coordinates)
mE2E2Err_u	real	4			Covariance in E2/E2 shape measure (pixel coordinates)
mE2E2Err_g	real	4			Covariance in E2/E2 shape measure (pixel coordinates)
mE2E2Err_r	real	4			Covariance in E2/E2 shape measure (pixel coordinates)
mE2E2Err_i	real	4			Covariance in E2/E2 shape measure (pixel coordinates)
mE2E2Err_z	real	4			Covariance in E2/E2 shape measure (pixel coordinates)
mRrCc_u	real	4			Adaptive ( + ) (pixel coordinates)
mRrCc_g	real	4			Adaptive ( + ) (pixel coordinates)
mRrCc_r	real	4			Adaptive ( + ) (pixel coordinates)
mRrCc_i	real	4			Adaptive ( + ) (pixel coordinates)
mRrCc_z	real	4			Adaptive ( + ) (pixel coordinates)
mRrCcErr_u	real	4			Error in adaptive ( + ) (pixel coordinates)
mRrCcErr_g	real	4			Error in adaptive ( + ) (pixel coordinates)
mRrCcErr_r	real	4			Error in adaptive ( + ) (pixel coordinates)
mRrCcErr_i	real	4			Error in adaptive ( + ) (pixel coordinates)
mRrCcErr_z	real	4			Error in adaptive ( + ) (pixel coordinates)
mCr4_u	real	4			Adaptive fourth moment of object (pixel coordinates)
mCr4_g	real	4			Adaptive fourth moment of object (pixel coordinates)
mCr4_r	real	4			Adaptive fourth moment of object (pixel coordinates)
mCr4_i	real	4			Adaptive fourth moment of object (pixel coordinates)
mCr4_z	real	4			Adaptive fourth moment of object (pixel coordinates)
mE1PSF_u	real	4			Adaptive E1 for PSF (pixel coordinates)
mE1PSF_g	real	4			Adaptive E1 for PSF (pixel coordinates)
mE1PSF_r	real	4			Adaptive E1 for PSF (pixel coordinates)
mE1PSF_i	real	4			Adaptive E1 for PSF (pixel coordinates)
mE1PSF_z	real	4			Adaptive E1 for PSF (pixel coordinates)
mE2PSF_u	real	4			Adaptive E2 for PSF (pixel coordinates)
mE2PSF_g	real	4			Adaptive E2 for PSF (pixel coordinates)
mE2PSF_r	real	4			Adaptive E2 for PSF (pixel coordinates)
mE2PSF_i	real	4			Adaptive E2 for PSF (pixel coordinates)
mE2PSF_z	real	4			Adaptive E2 for PSF (pixel coordinates)
mRrCcPSF_u	real	4			Adaptive ( + ) for PSF (pixel coordinates)
mRrCcPSF_g	real	4			Adaptive ( + ) for PSF (pixel coordinates)
mRrCcPSF_r	real	4			Adaptive ( + ) for PSF (pixel coordinates)
mRrCcPSF_i	real	4			Adaptive ( + ) for PSF (pixel coordinates)
mRrCcPSF_z	real	4			Adaptive ( + ) for PSF (pixel coordinates)
mCr4PSF_u	real	4			Adaptive fourth moment for PSF (pixel coordinates)
mCr4PSF_g	real	4			Adaptive fourth moment for PSF (pixel coordinates)
mCr4PSF_r	real	4			Adaptive fourth moment for PSF (pixel coordinates)
mCr4PSF_i	real	4			Adaptive fourth moment for PSF (pixel coordinates)
mCr4PSF_z	real	4			Adaptive fourth moment for PSF (pixel coordinates)
deVRad_u	real	4	arcsec		de Vaucouleurs fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
deVRad_g	real	4	arcsec		de Vaucouleurs fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
deVRad_r	real	4	arcsec		de Vaucouleurs fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
deVRad_i	real	4	arcsec		de Vaucouleurs fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
deVRad_z	real	4	arcsec		de Vaucouleurs fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
deVRadErr_u	real	4	arcsec		Error in de Vaucouleurs fit scale radius error
deVRadErr_g	real	4	arcsec		Error in de Vaucouleurs fit scale radius error
deVRadErr_r	real	4	arcsec		Error in de Vaucouleurs fit scale radius error
deVRadErr_i	real	4	arcsec		Error in de Vaucouleurs fit scale radius error
deVRadErr_z	real	4	arcsec		Error in de Vaucouleurs fit scale radius error
deVAB_u	real	4			de Vaucouleurs fit b/a
deVAB_g	real	4			de Vaucouleurs fit b/a
deVAB_r	real	4			de Vaucouleurs fit b/a
deVAB_i	real	4			de Vaucouleurs fit b/a
deVAB_z	real	4			de Vaucouleurs fit b/a
deVABErr_u	real	4			de Vaucouleurs fit b/a error
deVABErr_g	real	4			de Vaucouleurs fit b/a error
deVABErr_r	real	4			de Vaucouleurs fit b/a error
deVABErr_i	real	4			de Vaucouleurs fit b/a error
deVABErr_z	real	4			de Vaucouleurs fit b/a error
deVPhi_u	real	4	deg		de Vaucouleurs fit position angle (+N thru E)
deVPhi_g	real	4	deg		de Vaucouleurs fit position angle (+N thru E)
deVPhi_r	real	4	deg		de Vaucouleurs fit position angle (+N thru E)
deVPhi_i	real	4	deg		de Vaucouleurs fit position angle (+N thru E)
deVPhi_z	real	4	deg		de Vaucouleurs fit position angle (+N thru E)
deVMag_u	real	4	mag		de Vaucouleurs magnitude fit
deVMag_g	real	4	mag		de Vaucouleurs magnitude fit
deVMag_r	real	4	mag		de Vaucouleurs magnitude fit
deVMag_i	real	4	mag		de Vaucouleurs magnitude fit
deVMag_z	real	4	mag		de Vaucouleurs magnitude fit
deVMagErr_u	real	4	mag		de Vaucouleurs magnitude fit error
deVMagErr_g	real	4	mag		de Vaucouleurs magnitude fit error
deVMagErr_r	real	4	mag		de Vaucouleurs magnitude fit error
deVMagErr_i	real	4	mag		de Vaucouleurs magnitude fit error
deVMagErr_z	real	4	mag		de Vaucouleurs magnitude fit error
deVFlux_u	real	4	nanomaggies		de Vaucouleurs magnitude fit
deVFlux_g	real	4	nanomaggies		de Vaucouleurs magnitude fit
deVFlux_r	real	4	nanomaggies		de Vaucouleurs magnitude fit
deVFlux_i	real	4	nanomaggies		de Vaucouleurs magnitude fit
deVFlux_z	real	4	nanomaggies		de Vaucouleurs magnitude fit
deVFluxIvar_u	real	4	nanomaggies^{-2}		de Vaucouleurs magnitude fit inverse variance
deVFluxIvar_g	real	4	nanomaggies^{-2}		de Vaucouleurs magnitude fit inverse variance
deVFluxIvar_r	real	4	nanomaggies^{-2}		de Vaucouleurs magnitude fit inverse variance
deVFluxIvar_i	real	4	nanomaggies^{-2}		de Vaucouleurs magnitude fit inverse variance
deVFluxIvar_z	real	4	nanomaggies^{-2}		de Vaucouleurs magnitude fit inverse variance
expRad_u	real	4	arcsec		Exponential fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
expRad_g	real	4	arcsec		Exponential fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
expRad_r	real	4	arcsec		Exponential fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
expRad_i	real	4	arcsec		Exponential fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
expRad_z	real	4	arcsec		Exponential fit scale radius, here defined to be the same as the half-light radius, also called the effective radius.
expRadErr_u	real	4	arcsec		Exponential fit scale radius error
expRadErr_g	real	4	arcsec		Exponential fit scale radius error
expRadErr_r	real	4	arcsec		Exponential fit scale radius error
expRadErr_i	real	4	arcsec		Exponential fit scale radius error
expRadErr_z	real	4	arcsec		Exponential fit scale radius error
expAB_u	real	4			Exponential fit b/a
expAB_g	real	4			Exponential fit b/a
expAB_r	real	4			Exponential fit b/a
expAB_i	real	4			Exponential fit b/a
expAB_z	real	4			Exponential fit b/a
expABErr_u	real	4			Exponential fit b/a
expABErr_g	real	4			Exponential fit b/a
expABErr_r	real	4			Exponential fit b/a
expABErr_i	real	4			Exponential fit b/a
expABErr_z	real	4			Exponential fit b/a
expPhi_u	real	4	deg		Exponential fit position angle (+N thru E)
expPhi_g	real	4	deg		Exponential fit position angle (+N thru E)
expPhi_r	real	4	deg		Exponential fit position angle (+N thru E)
expPhi_i	real	4	deg		Exponential fit position angle (+N thru E)
expPhi_z	real	4	deg		Exponential fit position angle (+N thru E)
expMag_u	real	4	mag		Exponential fit magnitude
expMag_g	real	4	mag		Exponential fit magnitude
expMag_r	real	4	mag		Exponential fit magnitude
expMag_i	real	4	mag		Exponential fit magnitude
expMag_z	real	4	mag		Exponential fit magnitude
expMagErr_u	real	4	mag		Exponential fit magnitude error
expMagErr_g	real	4	mag		Exponential fit magnitude error
expMagErr_r	real	4	mag		Exponential fit magnitude error
expMagErr_i	real	4	mag		Exponential fit magnitude error
expMagErr_z	real	4	mag		Exponential fit magnitude error
modelMag_u	real	4	mag		better of DeV/Exp magnitude fit
modelMag_g	real	4	mag		better of DeV/Exp magnitude fit
modelMag_r	real	4	mag		better of DeV/Exp magnitude fit
modelMag_i	real	4	mag		better of DeV/Exp magnitude fit
modelMag_z	real	4	mag		better of DeV/Exp magnitude fit
modelMagErr_u	real	4	mag		Error in better of DeV/Exp magnitude fit
modelMagErr_g	real	4	mag		Error in better of DeV/Exp magnitude fit
modelMagErr_r	real	4	mag		Error in better of DeV/Exp magnitude fit
modelMagErr_i	real	4	mag		Error in better of DeV/Exp magnitude fit
modelMagErr_z	real	4	mag		Error in better of DeV/Exp magnitude fit
cModelMag_u	real	4	mag		DeV+Exp magnitude
cModelMag_g	real	4	mag		DeV+Exp magnitude
cModelMag_r	real	4	mag		DeV+Exp magnitude
cModelMag_i	real	4	mag		DeV+Exp magnitude
cModelMag_z	real	4	mag		DeV+Exp magnitude
cModelMagErr_u	real	4	mag		DeV+Exp magnitude error
cModelMagErr_g	real	4	mag		DeV+Exp magnitude error
cModelMagErr_r	real	4	mag		DeV+Exp magnitude error
cModelMagErr_i	real	4	mag		DeV+Exp magnitude error
cModelMagErr_z	real	4	mag		DeV+Exp magnitude error
expFlux_u	real	4	nanomaggies		Exponential fit flux
expFlux_g	real	4	nanomaggies		Exponential fit flux
expFlux_r	real	4	nanomaggies		Exponential fit flux
expFlux_i	real	4	nanomaggies		Exponential fit flux
expFlux_z	real	4	nanomaggies		Exponential fit flux
expFluxIvar_u	real	4	nanomaggies^{-2}		Exponential fit flux inverse variance
expFluxIvar_g	real	4	nanomaggies^{-2}		Exponential fit flux inverse variance
expFluxIvar_r	real	4	nanomaggies^{-2}		Exponential fit flux inverse variance
expFluxIvar_i	real	4	nanomaggies^{-2}		Exponential fit flux inverse variance
expFluxIvar_z	real	4	nanomaggies^{-2}		Exponential fit flux inverse variance
modelFlux_u	real	4	nanomaggies		better of DeV/Exp flux fit
modelFlux_g	real	4	nanomaggies		better of DeV/Exp flux fit
modelFlux_r	real	4	nanomaggies		better of DeV/Exp flux fit
modelFlux_i	real	4	nanomaggies		better of DeV/Exp flux fit
modelFlux_z	real	4	nanomaggies		better of DeV/Exp flux fit
modelFluxIvar_u	real	4	nanomaggies^{-2}		Inverse variance in better of DeV/Exp flux fit
modelFluxIvar_g	real	4	nanomaggies^{-2}		Inverse variance in better of DeV/Exp flux fit
modelFluxIvar_r	real	4	nanomaggies^{-2}		Inverse variance in better of DeV/Exp flux fit
modelFluxIvar_i	real	4	nanomaggies^{-2}		Inverse variance in better of DeV/Exp flux fit
modelFluxIvar_z	real	4	nanomaggies^{-2}		Inverse variance in better of DeV/Exp flux fit
cModelFlux_u	real	4	nanomaggies		better of DeV+Exp flux
cModelFlux_g	real	4	nanomaggies		better of DeV+Exp flux
cModelFlux_r	real	4	nanomaggies		better of DeV+Exp flux
cModelFlux_i	real	4	nanomaggies		better of DeV+Exp flux
cModelFlux_z	real	4	nanomaggies		better of DeV+Exp flux
cModelFluxIvar_u	real	4	nanomaggies^{-2}		Inverse variance in DeV+Exp flux fit
cModelFluxIvar_g	real	4	nanomaggies^{-2}		Inverse variance in DeV+Exp flux fit
cModelFluxIvar_r	real	4	nanomaggies^{-2}		Inverse variance in DeV+Exp flux fit
cModelFluxIvar_i	real	4	nanomaggies^{-2}		Inverse variance in DeV+Exp flux fit
cModelFluxIvar_z	real	4	nanomaggies^{-2}		Inverse variance in DeV+Exp flux fit
aperFlux7_u	real	4	nanomaggies		Aperture flux within 7.3 arcsec
aperFlux7_g	real	4	nanomaggies		Aperture flux within 7.3 arcsec
aperFlux7_r	real	4	nanomaggies		Aperture flux within 7.3 arcsec
aperFlux7_i	real	4	nanomaggies		Aperture flux within 7.3 arcsec
aperFlux7_z	real	4	nanomaggies		Aperture flux within 7.3 arcsec
aperFlux7Ivar_u	real	4	nanomaggies^{-2}		Inverse variance of aperture flux within 7.3 arcsec
aperFlux7Ivar_g	real	4	nanomaggies^{-2}		Inverse variance of aperture flux within 7.3 arcsec
aperFlux7Ivar_r	real	4	nanomaggies^{-2}		Inverse variance of aperture flux within 7.3 arcsec
aperFlux7Ivar_i	real	4	nanomaggies^{-2}		Inverse variance of aperture flux within 7.3 arcsec
aperFlux7Ivar_z	real	4	nanomaggies^{-2}		Inverse variance of aperture flux within 7.3 arcsec
lnLStar_u	real	4			Star ln(likelihood)
lnLStar_g	real	4			Star ln(likelihood)
lnLStar_r	real	4			Star ln(likelihood)
lnLStar_i	real	4			Star ln(likelihood)
lnLStar_z	real	4			Star ln(likelihood)
lnLExp_u	real	4			Exponential disk fit ln(likelihood)
lnLExp_g	real	4			Exponential disk fit ln(likelihood)
lnLExp_r	real	4			Exponential disk fit ln(likelihood)
lnLExp_i	real	4			Exponential disk fit ln(likelihood)
lnLExp_z	real	4			Exponential disk fit ln(likelihood)
lnLDeV_u	real	4			de Vaucouleurs fit ln(likelihood)
lnLDeV_g	real	4			de Vaucouleurs fit ln(likelihood)
lnLDeV_r	real	4			de Vaucouleurs fit ln(likelihood)
lnLDeV_i	real	4			de Vaucouleurs fit ln(likelihood)
lnLDeV_z	real	4			de Vaucouleurs fit ln(likelihood)
fracDeV_u	real	4			Weight of deV component in deV+Exp model
fracDeV_g	real	4			Weight of deV component in deV+Exp model
fracDeV_r	real	4			Weight of deV component in deV+Exp model
fracDeV_i	real	4			Weight of deV component in deV+Exp model
fracDeV_z	real	4			Weight of deV component in deV+Exp model
flags_u	bigint	8			Object detection flags per band
flags_g	bigint	8			Object detection flags per band
flags_r	bigint	8			Object detection flags per band
flags_i	bigint	8			Object detection flags per band
flags_z	bigint	8			Object detection flags per band
type_u	int	4			Object type classification per band
type_g	int	4			Object type classification per band
type_r	int	4			Object type classification per band
type_i	int	4			Object type classification per band
type_z	int	4			Object type classification per band
probPSF_u	real	4			Probablity object is a star in each filter.
probPSF_g	real	4			Probablity object is a star in each filter.
probPSF_r	real	4			Probablity object is a star in each filter.
probPSF_i	real	4			Probablity object is a star in each filter.
probPSF_z	real	4			Probablity object is a star in each filter.
ra	float	8	deg		J2000 Right Ascension (r-band)
dec	float	8	deg		J2000 Declination (r-band)
cx	float	8			unit vector for ra+dec
cy	float	8			unit vector for ra+dec
cz	float	8			unit vector for ra+dec
raErr	float	8	arcsec		Error in RA (* cos(Dec), that is, proper units)
decErr	float	8	arcsec		Error in Dec
b	float	8	deg		Galactic latitude
l	float	8	deg		Galactic longitude
offsetRa_u	real	4	arcsec		filter position RA minus final RA (* cos(Dec), that is, proper units)
offsetRa_g	real	4	arcsec		filter position RA minus final RA (* cos(Dec), that is, proper units)
offsetRa_r	real	4	arcsec		filter position RA minus final RA (* cos(Dec), that is, proper units)
offsetRa_i	real	4	arcsec		filter position RA minus final RA (* cos(Dec), that is, proper units)
offsetRa_z	real	4	arcsec		filter position RA minus final RA (* cos(Dec), that is, proper units)
offsetDec_u	real	4	arcsec		filter position Dec minus final Dec
offsetDec_g	real	4	arcsec		filter position Dec minus final Dec
offsetDec_r	real	4	arcsec		filter position Dec minus final Dec
offsetDec_i	real	4	arcsec		filter position Dec minus final Dec
offsetDec_z	real	4	arcsec		filter position Dec minus final Dec
extinction_u	real	4	mag		Extinction in u-band
extinction_g	real	4	mag		Extinction in g-band
extinction_r	real	4	mag		Extinction in r-band
extinction_i	real	4	mag		Extinction in i-band
extinction_z	real	4	mag		Extinction in z-band
psffwhm_u	real	4	arcsec		FWHM in u-band
psffwhm_g	real	4	arcsec		FWHM in g-band
psffwhm_r	real	4	arcsec		FWHM in r-band
psffwhm_i	real	4	arcsec		FWHM in i-band
psffwhm_z	real	4	arcsec		FWHM in z-band
mjd	int	4	days		Date of observation
airmass_u	real	4			Airmass at time of observation in u-band
airmass_g	real	4			Airmass at time of observation in g-band
airmass_r	real	4			Airmass at time of observation in r-band
airmass_i	real	4			Airmass at time of observation in i-band
airmass_z	real	4			Airmass at time of observation in z-band
phioffset_u	real	4	deg		Degrees to add to CCD-aligned angle to convert to E of N
phioffset_g	real	4	deg		Degrees to add to CCD-aligned angle to convert to E of N
phioffset_r	real	4	deg		Degrees to add to CCD-aligned angle to convert to E of N
phioffset_i	real	4	deg		Degrees to add to CCD-aligned angle to convert to E of N
phioffset_z	real	4	deg		Degrees to add to CCD-aligned angle to convert to E of N
nProf_u	int	4			Number of Profile Bins
nProf_g	int	4			Number of Profile Bins
nProf_r	int	4			Number of Profile Bins
nProf_i	int	4			Number of Profile Bins
nProf_z	int	4			Number of Profile Bins
loadVersion	int	4			Load Version
htmID	bigint	8			20-deep hierarchical trangular mesh ID of this object
fieldID	bigint	8			Link to the field this object is in
parentID	bigint	8			Pointer to parent (if object deblended) or BRIGHT detection (if object has one), else 0
specObjID	bigint	8			Pointer to the spectrum of object, if exists, else 0
u	real	4	mag		Shorthand alias for modelMag
g	real	4	mag		Shorthand alias for modelMag
r	real	4	mag		Shorthand alias for modelMag
i	real	4	mag		Shorthand alias for modelMag
z	real	4	mag		Shorthand alias for modelMag
err_u	real	4	mag		Error in modelMag alias
err_g	real	4	mag		Error in modelMag alias
err_r	real	4	mag		Error in modelMag alias
err_i	real	4	mag		Error in modelMag alias
err_z	real	4	mag		Error in modelMag alias
dered_u	real	4	mag		Simplified mag, corrected for extinction: modelMag-extinction
dered_g	real	4	mag		Simplified mag, corrected for extinction: modelMag-extinction
dered_r	real	4	mag		Simplified mag, corrected for extinction: modelMag-extinction
dered_i	real	4	mag		Simplified mag, corrected for extinction: modelMag-extinction
dered_z	real	4	mag		Simplified mag, corrected for extinction: modelMag-extinction
cloudCam_u	int	4			Cloud camera status for observation in u-band
cloudCam_g	int	4			Cloud camera status for observation in g-band
cloudCam_r	int	4			Cloud camera status for observation in r-band
cloudCam_i	int	4			Cloud camera status for observation in i-band
cloudCam_z	int	4			Cloud camera status for observation in z-band
resolveStatus	int	4			Resolve status of object
thingId	int	4			Unique identifier from global resolve
balkanId	int	4			What balkan object is in from window
nObserve	int	4			Number of observations of this object
nDetect	int	4			Number of detections of this object
nEdge	int	4			Number of observations of this object near an edge
score	real	4			Quality of field (0-1)
calibStatus_u	int	4			Calibration status in u-band
calibStatus_g	int	4			Calibration status in g-band
calibStatus_r	int	4			Calibration status in r-band
calibStatus_i	int	4			Calibration status in i-band
calibStatus_z	int	4			Calibration status in z-band
nMgyPerCount_u	real	4	nmgy/count		nanomaggies per count in u-band
nMgyPerCount_g	real	4	nmgy/count		nanomaggies per count in g-band
nMgyPerCount_r	real	4	nmgy/count		nanomaggies per count in r-band
nMgyPerCount_i	real	4	nmgy/count		nanomaggies per count in i-band
nMgyPerCount_z	real	4	nmgy/count		nanomaggies per count in z-band
TAI_u	float	8	sec		time of observation (TAI) in each filter
TAI_g	float	8	sec		time of observation (TAI) in each filter
TAI_r	float	8	sec		time of observation (TAI) in each filter
TAI_i	float	8	sec		time of observation (TAI) in each filter
TAI_z	float	8	sec		time of observation (TAI) in each filter

Getting FITS files from the SAS (Science Archive Server)

After you press Submit, the page that displays the results of the query will include the appropriate button(s) to upload the results of the query to the SAS to retrieve the corresponding raw FITS file data. If you only request imaging data and include the columns run, rerun, camcol, and field (these are included in the minimal and typical column lists), then the Upload list of fields to SAS button will be displayed on the results page (below the query results table). If you request spectroscopic data, and include the columns plate, mjd and fiberid in the output (included in the minimal and typical column lists), then the Upload list of spectra to SAS button will be displayed on the results page so you can retrieve FITS files for the spectra.

Position Constraints

Which positional constraints (if any) do you want applied to your query?

Rectangular Search

Valid formats (J2000):

• raMin/raMax in decimal degrees (D.ddddd) or in sexagesimal hours, minutes, seconds (HH:MM:SS.ss or HH MM SS.ss)
• decMin/decMax in decimal degrees (+/-DD.ddddd) or in sexagesimal degrees, arcminutes, arcseconds (+/-DD:MM:SS.s or +/-DD MM SS.s)

Cone Search

For a given RA and DEC, the cone search returns all objects within the search radius that meet your search constraints.

Valid formats (J2000):

• raCenter in decimal degrees (D.ddddd) or in sexagesimal hours, minutes, seconds (HH:MM:SS.ss or HH MM SS.ss)
• decCenter in decimal degrees (+/-DD.ddddd) or in sexagesimal degrees, arcminutes, arcseconds (+/-DD:MM:SS.s or +/-DD MM SS.s)
• radius in decimal arcminutes (M.mmm)

Do you want to search the proximities for a list of ra's and dec's?

Proximity Search allows you to enter a list of RA/Dec positions and find objects near those positions. For each RA and Dec you enter, the proximity search returns objects within the specified search radius that meet your search constraints.

The list can be either entered directly into the box or uploaded as a file. In either case, the positions must be of the form:

ra dec [sep]

with each item separated by a comma or space. The first two numbers, "ra" and "dec," are requried - these are the sky positions (J2000) around which to search. The third, "sep," is optional - it is the separation distance or seach radius, in arcminutes, around which to search. If you do not enter a value for "sep," the default is 1 arcminute.

Valid formats for positions are:  

• ra in decimal degrees (D.ddddd); or in sexagesimal hours, minutes, seconds (HH:MM:SS.ss or HH MM SS.ss)  
• dec in decimal degrees (+/-DD.ddddd); or in sexagesimal degrees, arcminutes, arcseconds (+/-DD:MM:SS.s or +/-DD MM SS.s) 
• sep in decimal arcminutes (S.ssss...)

"Nearest Only" returns only one match for each position you enter - the sky object meeting your search criteria that is nearest to the position you entered.

"All Nearby" returns all objects meeting your criteria within your search radius.

That means that "Nearest Only" only will return at most one match for each position you entered; "All Nearby" could return many matches for each position.

Spectroscopy Constraints

Which spectroscopic constraints (if any) do you want applied to your query?

Redshift

Do you want to search over a given range in redshift?

Redshifts less than zero are possible (e.g., for stars), as are redshifts greater than 5 (some QSOs, but also objects with poorly measured redshifts). The "Redshift warning flags" toggle allows you to remove the constraint that there should be no redshift warnings (default). Uncheck this if you want to allow spectra that have redshifts with warnings associated with them. The warning flags are encoded as bits in the zWarning column in the SpecObjAll table.

Spectral Classification

What type of objects (as automatically classified by their spectra) do you want returned from your query?

The options are:

Primtarget

Which type of objects do you want returned from your query? (Here, the object type is from the spectroscopic target selection algorithms, where the objects have been classified photometrically or by matchup with other catalogs.) (primary target categories)

The primTarget field is a bit mask specifying which primary target categories the object was selected in. If you select one or more bits in the At least one of these bits ON menu, then the bit-wise OR of each of those bits is computed and it must be greater than 0. If you select one or more of the bits in the All of these bits OFF menu, then the bit-wise AND of all those bits is computed and it must be equal to 0.

The bits are defined as:

Sectarget

Which type of objects do you want returned from your query? (Here, the object type is from the spectroscopic target selection algorithms, where the objects have been classified photometrically or by matchup with other catalogs.) (secondary target categories)

The secTarget field is a bit mask specifying which primary target categories the object was selected in. If you select one or more bits in the At least one of these bits ON menu, then the bit-wise OR of each of those bits is computed and it must be greater than 0. If you select one or more of the bits in the All of these bits OFF menu, then the bit-wise AND of all those bits is computed and it must be equal to 0.

The bits are defined as:

Imaging Constraints

Which imaging constraints (if any) do you want applied to your query?

Sky Version

Magnitude Type

1. Petrosian magnitudes and colors,
2. PSF magnitudes and colors, or
3. model magnitudes and colors.

Magnitudes

Do you want to search over given range in u, g, r, i, and/or z magnitudes?

Colors

Do you want to search over given range in u-g, g-r, r-i, and/or i-z colors?

Object Type

Which type of objects do you want returned from your query? (Here, the object type is the classification from the photometric pipeline, and are based upon how well an object matches a stellar, de Vaucouleurs, or exponential profile.)

The object types are:

• Extended Sources (e.g., galaxies)
• Point Sources (e.g., stars, QSOs)
• Sky Fibers (sky)
• Unknown (?)

Photometric Quality

You can restrict the search to objects that have minimum photometric quality as determined by the score column in the PhotoObjAll table. The possible values of score are 0 and 1 (0=BAD, 1=ACCEPTABLE). Independently of this constraint, you may also opt to return the score value from the PhotoObjAll table for each object in your search, by checking the "Return value" checkbox. If no value is entered in the "Match Score" box, no quality constraint will be applied but the score will still be returned with your query results.

Photo Flags

Which set of object flags (from photo) do wish to query on?

These flags are discussed in more detail in the document "Understanding the SDSS Image Data Processing Flags".

Photo flags can be set (ON) or (OFF). If you select one or more flags in the At least one of these flags ON menu, then the bit-wise OR of each of those flag bits is computed and it must be greater than 0. If you select one or more of the flags in the All of these flags OFF menu, then the bit-wise AND of all those flag bits is computed and it must be equal to 0.

The object photo flags are: