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IQS/SQS Form Query User Guide
Use the IQS (SQS) to make intermediate-level queries on the DR7 CAS database for objects in the DR7 imaging (spectroscopic) sample.

Table of contents:


Parameters to Return

Which spectroscopic and/or imaging parameters do you want returned from your query?


Spectroscopy Parameters

Which spectroscopic parameters do you want returned from your query?
Useful spectroscopy parameter combinations:

none (IQS: none, SQS: plateid, mjd, fiberid)
minimal (plateid, mjd, fiberid)
typical (plateid, mjd, fiberid, z, z_err, z_conf, z_status, spec_cln, z_warnin, raObj, decObj)
radec (ra, dec)

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

nametypelengthunitucddescription
specObjIDbigint8 ID_CATALOGUnique ID
mjdint4MJDTIME_DATEMJD of observation
platesmallint2 ID_PLATEPlate ID
tilesmallint2 ID_PLATETile ID
xFocalfloat8 POS_CCD_XX Focal
yFocalfloat8 POS_CCD_YY Focal
fiberIDsmallint2 ID_FIBERFiber ID
zreal4 REDSHIFTFinal Redshift
zErrreal4 REDSHIFT ERRORRedshift error
zConfreal4 REDSHIFT STAT_PROBABILITYRedshift confidence
zStatusLink to SpecZStatussmallint2 CODE_QUALITYRedshift status
specClassLink to SpecClasssmallint2 CLASS_OBJECTSpectral Classification
zWarningLink to SpeczWarningint4 CODE_QUALITYWarning Flags
velDispreal4???VELOC_DISPVelocity Dispersion
velDispErrreal4 VELOC_DISP ERRORVelocity Dispersion error
eCoeff_0real4 FIT_PARAMExpansion Coeff for Galaxies
eCoeff_1real4 FIT_PARAMExpansion Coeff for Galaxies
eCoeff_2real4 FIT_PARAMExpansion Coeff for Galaxies
eCoeff_3real4 FIT_PARAMExpansion Coeff for Galaxies
eCoeff_4real4 FIT_PARAMExpansion Coeff for Galaxies
eClassreal4 CLASS_OBJECTClassification
nGoodint4pixNUMBERGood Pixels
sn_0real4 INST_S/NMedian S/N in g'
sn_1real4 INST_S/NMedian S/N in r'
sn_2real4 INST_S/NMedian S/N in i'
mag_0real4magPHOT_SDSS_GSynthetic Magnitude in g'
mag_1real4magPHOT_SDSS_RSynthetic Magnitude in r'
mag_2real4magPHOT_SDSS_ISynthetic Magnitude in i'
rafloat8degPOS_EQ_RA_MAINra in J2000
decfloat8degPOS_EQ_DEC_MAINdec in J2000
cxfloat8 POS_EQ_CART_X?x of Normal unit vector in J2000
cyfloat8 POS_EQ_CART_Y?y of Normal unit vector in J2000
czfloat8 POS_EQ_CART_Z?z of Normal unit vector in J2000
htmIDbigint8 CODE_HTM20 deep Hierarchical Triangular Mesh ID
fiberMag_ureal4luptitudesPHOT_SDSS_UFiber Magnitudes
fiberMag_greal4luptitudesPHOT_SDSS_GFiber Magnitudes
fiberMag_rreal4luptitudesPHOT_SDSS_RFiber Magnitudes
fiberMag_ireal4luptitudesPHOT_SDSS_IFiber Magnitudes
fiberMag_zreal4luptitudesPHOT_SDSS_ZFiber Magnitudes
primTargetLink to PrimTargetint4 CODE_MISCSpecifies which primary target catagories the object was selected in.
secTargetLink to SecTargetint4 CODE_MISCSpecifies which secondary target catagories the object was selected in.
seguePrimTargetLink to PrimTargetint4 CODE_MISCSpecifies which SEGUE primary target catagories the object was selected in.
segueSecTargetLink to SecTargetint4 CODE_MISCSpecifies which SEGUE secondary target catagories the object was selected in.
otherPrimTargetLink to PrimTargetint4 CODE_MISCSpecifies which other program primary target catagories the object was selected in.
otherSecTargetLink to SecTargetint4 CODE_MISCSpecifies which other program secondary target catagories the object was selected in.
pixMinsmallint2pixINST_DET_LIMITPixmin
pixMaxsmallint2pixINST_DET_LIMITPixmax
sci_snreal4 CODE_MISCScience signal to noise ratio
smear_snreal4 CODE_MISCSmear signal to noise ratio
sm_leg_0real4 CODE_MISC1st legendre coeff. for smear correct
sm_leg_1real4 CODE_MISC2nd legendre coeff. for smear correct
sm_leg_2real4 CODE_MISC3rd legendre coeff. for smear correct
sciencePrimarysmallint2 CODE_MISCDeemed to be science-worthy (defines default view SpecObj)
loadVersionint4 ID_TRACERLoad Version
plateIDbigint8 ID_PLATELink to plate on which the spectrum was taken
spectrographIDsmallint2 INST_IDwhich spectrograph (1,2)
throughputint4???NUMBERfiber throughput as measured by mapper
objTypeLink to ObjTypeint4 CLASS_OBJECTobject type (plPlugMap style)
objTypeNameLink to ObjTypevarchar32 CLASS_OBJECTObject Type as string
targetIDbigint8 ID_CATALOGID of Target
targetObjIDbigint8 ID_CATALOGID of target PhotoObj
bestObjIDbigint8 ID_MAINID of best PhotoObj
imgimage16 SPECTGIF image of the spectrum


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:

none (SQS: none, IQS: run, rerun, camcol, field, id)
minimal (run, rerun, camcol, field, id)
typical (run, rerun, camcol, field, id, objc_type, ra, decl, mag_model_r)
radec (ra, dec)
model_mags (mag_model_u, mag_model_g, mag_model_r, mag_model_i, mag_model_z)
model_magerrs (mag_modelerr_u, mag_modelerr_g, mag_modelerr_r, mag_modelerr_i, mag_modelerr_z)
psf_mags (psfmag_u, psfmag_g, psfmag_r, psfmag_i, psfmag_z)
psf_magerrs (psfmagerr_u, psfmagerr_g, psfmagerr_r, psfmagerr_i, psfmagerr_z)
petro_mags (petromag_u, petromag_g, petromag_r, petromag_i, petromag_z)
petro_magerrs (petromagerr_u, petromagerr_g, petromagerr_r, petromagerr_i, petromagerr_z)
model_colors (ugModelColor, grModelColor, riModelColor, izModelColor)
ugModelColor (mag_model_u-mag_model_g)
grModelColor (mag_model_g-mag_model_r)
riModelColor (mag_model_r-mag_model_i)
izModelColor (mag_model_i-mag_model_z)

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

SDSS JHHMMSS.ss+DDMMSS.s.
The SDSS name is generated with a call to the function fIAUFromEq.

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

nametypelengthunitucddescription
objIDbigint8 ID_MAINUnique SDSS identifier composed from [skyVersion,rerun,run,camcol,field,obj].
skyVersiontinyint1 CODE_MISC0 = OPDB target, 1 = OPDB best
runsmallint2 OBS_RUNRun number
rerunsmallint2 CODE_MISCRerun number
camcoltinyint1 INST_IDCamera column
fieldsmallint2 ID_FIELDField number
objsmallint2 ID_NUMBERThe object id within a field. Usually changes between reruns of the same field.
modetinyint1 CLASS_OBJECT1: primary, 2: secondary, 3: family object, 4: outside chunk boundary.
nChildsmallint2 NUMBERNumber 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.
typeLink to PhotoTypesmallint2 CLASS_OBJECTMorphological type classification of the object.
cleanint4 CODE_MISCClean photometry flag for point sources (1=clean, 0=unclean).
probPSFreal4 STAT_PROBABILITYProbability that the object is a star. Currently 0 if type == 3 (galaxy), 1 if type == 6 (star).
insideMaskLink to InsideMasktinyint1 CODE_MISCFlag to indicate whether object is inside a mask and why
flagsLink to PhotoFlagsbigint8 CODE_MISCPhoto Object Attribute Flags
rowcreal4pixPOS_CCD_YRow center position (r' coordinates)
rowcErrreal4pixPOS_CCD_Y ERRORRow center position error (r' coordinates)
colcreal4pixPOS_CCD_XColumn center position (r' coordinates)
colcErrreal4pixPOS_CCD_X ERRORColumn center position error (r' coordinates)
rowvreal4deg/dayPOS_ANG_VELRow-component of object's velocity.
rowvErrreal4deg/dayPOS_ANG_VEL ERRORRow-component of object's velocity error
colvreal4deg/dayPOS_ANG_VELColumn-component of object's velocity.
colvErrreal4deg/dayPOS_ANG_VEL ERRORColumn-component of object's velocity error
rowc_ureal4pixPOS_CCD_YRow center
rowc_greal4pixPOS_CCD_YRow center
rowc_rreal4pixPOS_CCD_YRow center
rowc_ireal4pixPOS_CCD_YRow center
rowc_zreal4pixPOS_CCD_YRow center
rowcErr_ureal4pixPOS_CCD_Y ERRORRow center error
rowcErr_greal4pixPOS_CCD_Y ERRORRow center error
rowcErr_rreal4pixPOS_CCD_Y ERRORRow center error
rowcErr_ireal4pixPOS_CCD_Y ERRORRow center error
rowcErr_zreal4pixPOS_CCD_Y ERRORRow center error
colc_ureal4pixPOS_CCD_XColumn center
colc_greal4pixPOS_CCD_XColumn center
colc_rreal4pixPOS_CCD_XColumn center
colc_ireal4pixPOS_CCD_XColumn center
colc_zreal4pixPOS_CCD_XColumn center
colcErr_ureal4pixPOS_CCD_X ERRORColumn center error
colcErr_greal4pixPOS_CCD_X ERRORColumn center error
colcErr_rreal4pixPOS_CCD_X ERRORColumn center error
colcErr_ireal4pixPOS_CCD_X ERRORColumn center error
colcErr_zreal4pixPOS_CCD_X ERRORColumn center error
sky_ureal4maggies/arcsec^2INST_SKY_LEVELSky flux at the center of object (allowing for siblings if blended).
sky_greal4maggies/arcsec^2INST_SKY_LEVELSky flux at the center of object (allowing for siblings if blended).
sky_rreal4maggies/arcsec^2INST_SKY_LEVELSky flux at the center of object (allowing for siblings if blended).
sky_ireal4maggies/arcsec^2INST_SKY_LEVELSky flux at the center of object (allowing for siblings if blended).
sky_zreal4maggies/arcsec^2INST_SKY_LEVELSky flux at the center of object (allowing for siblings if blended).
skyErr_ureal4maggies/arcsec^2INST_SKY_LEVEL ERRORSky flux error
skyErr_greal4maggies/arcsec^2INST_SKY_LEVEL ERRORSky flux error
skyErr_rreal4maggies/arcsec^2INST_SKY_LEVEL ERRORSky flux error
skyErr_ireal4maggies/arcsec^2INST_SKY_LEVEL ERRORSky flux error
skyErr_zreal4maggies/arcsec^2INST_SKY_LEVEL ERRORSky flux error
psfMag_ureal4magPHOT_SDSS_UPSF flux
psfMag_greal4magPHOT_SDSS_GPSF flux
psfMag_rreal4magPHOT_SDSS_RPSF flux
psfMag_ireal4magPHOT_SDSS_IPSF flux
psfMag_zreal4magPHOT_SDSS_ZPSF flux
psfMagErr_ureal4magPHOT_SDSS_U ERRORPSF flux error
psfMagErr_greal4magPHOT_SDSS_G ERRORPSF flux error
psfMagErr_rreal4magPHOT_SDSS_R ERRORPSF flux error
psfMagErr_ireal4magPHOT_SDSS_I ERRORPSF flux error
psfMagErr_zreal4magPHOT_SDSS_Z ERRORPSF flux error
fiberMag_ureal4magPHOT_SDSS_UFlux in 3 arcsec diameter fiber radius
fiberMag_greal4magPHOT_SDSS_GFlux in 3 arcsec diameter fiber radius
fiberMag_rreal4magPHOT_SDSS_RFlux in 3 arcsec diameter fiber radius
fiberMag_ireal4magPHOT_SDSS_IFlux in 3 arcsec diameter fiber radius
fiberMag_zreal4magPHOT_SDSS_ZFlux in 3 arcsec diameter fiber radius
fiberMagErr_ureal4magPHOT_SDSS_U ERRORFlux in 3 arcsec diameter fiber radius error
fiberMagErr_greal4magPHOT_SDSS_G ERRORFlux in 3 arcsec diameter fiber radius error
fiberMagErr_rreal4magPHOT_SDSS_R ERRORFlux in 3 arcsec diameter fiber radius error
fiberMagErr_ireal4magPHOT_SDSS_I ERRORFlux in 3 arcsec diameter fiber radius error
fiberMagErr_zreal4magPHOT_SDSS_Z ERRORFlux in 3 arcsec diameter fiber radius error
petroMag_ureal4magPHOT_SDSS_UPetrosian flux
petroMag_greal4magPHOT_SDSS_GPetrosian flux
petroMag_rreal4magPHOT_SDSS_RPetrosian flux
petroMag_ireal4magPHOT_SDSS_IPetrosian flux
petroMag_zreal4magPHOT_SDSS_ZPetrosian flux
petroMagErr_ureal4magPHOT_SDSS_U ERRORPetrosian flux error
petroMagErr_greal4magPHOT_SDSS_G ERRORPetrosian flux error
petroMagErr_rreal4magPHOT_SDSS_R ERRORPetrosian flux error
petroMagErr_ireal4magPHOT_SDSS_I ERRORPetrosian flux error
petroMagErr_zreal4magPHOT_SDSS_Z ERRORPetrosian flux error
petroRad_ureal4arcsecEXTENSION_RADPetrosian radius
petroRad_greal4arcsecEXTENSION_RADPetrosian radius
petroRad_rreal4arcsecEXTENSION_RADPetrosian radius
petroRad_ireal4arcsecEXTENSION_RADPetrosian radius
petroRad_zreal4arcsecEXTENSION_RADPetrosian radius
petroRadErr_ureal4arcsecEXTENSION_RAD ERRORPetrosian radius error
petroRadErr_greal4arcsecEXTENSION_RAD ERRORPetrosian radius error
petroRadErr_rreal4arcsecEXTENSION_RAD ERRORPetrosian radius error
petroRadErr_ireal4arcsecEXTENSION_RAD ERRORPetrosian radius error
petroRadErr_zreal4arcsecEXTENSION_RAD ERRORPetrosian radius error
petroR50_ureal4arcsecEXTENSION_RADRadius containing 50% of Petrosian flux
petroR50_greal4arcsecEXTENSION_RADRadius containing 50% of Petrosian flux
petroR50_rreal4arcsecEXTENSION_RADRadius containing 50% of Petrosian flux
petroR50_ireal4arcsecEXTENSION_RADRadius containing 50% of Petrosian flux
petroR50_zreal4arcsecEXTENSION_RADRadius containing 50% of Petrosian flux
petroR50Err_ureal4arcsecEXTENSION_RAD ERRORError in radius with 50% of Petrosian flux error
petroR50Err_greal4arcsecEXTENSION_RAD ERRORError in radius with 50% of Petrosian flux error
petroR50Err_rreal4arcsecEXTENSION_RAD ERRORError in radius with 50% of Petrosian flux error
petroR50Err_ireal4arcsecEXTENSION_RAD ERRORError in radius with 50% of Petrosian flux error
petroR50Err_zreal4arcsecEXTENSION_RAD ERRORError in radius with 50% of Petrosian flux error
petroR90_ureal4arcsecEXTENSION_RADRadius containing 90% of Petrosian flux
petroR90_greal4arcsecEXTENSION_RADRadius containing 90% of Petrosian flux
petroR90_rreal4arcsecEXTENSION_RADRadius containing 90% of Petrosian flux
petroR90_ireal4arcsecEXTENSION_RADRadius containing 90% of Petrosian flux
petroR90_zreal4arcsecEXTENSION_RADRadius containing 90% of Petrosian flux
petroR90Err_ureal4arcsecEXTENSION_RAD ERRORError in radius with 90% of Petrosian flux error
petroR90Err_greal4arcsecEXTENSION_RAD ERRORError in radius with 90% of Petrosian flux error
petroR90Err_rreal4arcsecEXTENSION_RAD ERRORError in radius with 90% of Petrosian flux error
petroR90Err_ireal4arcsecEXTENSION_RAD ERRORError in radius with 90% of Petrosian flux error
petroR90Err_zreal4arcsecEXTENSION_RAD ERRORError in radius with 90% of Petrosian flux error
q_ureal4 FIT_PARAMStokes Q parameter
q_greal4 FIT_PARAMStokes Q parameter
q_rreal4 FIT_PARAMStokes Q parameter
q_ireal4 FIT_PARAMStokes Q parameter
q_zreal4 FIT_PARAMStokes Q parameter
qErr_ureal4 FIT_PARAM ERRORStokes Q parameter error
qErr_greal4 FIT_PARAM ERRORStokes Q parameter error
qErr_rreal4 FIT_PARAM ERRORStokes Q parameter error
qErr_ireal4 FIT_PARAM ERRORStokes Q parameter error
qErr_zreal4 FIT_PARAM ERRORStokes Q parameter error
u_ureal4 FIT_PARAMStokes U parameter
u_greal4 FIT_PARAMStokes U parameter
u_rreal4 FIT_PARAMStokes U parameter
u_ireal4 FIT_PARAMStokes U parameter
u_zreal4 FIT_PARAMStokes U parameter
uErr_ureal4 FIT_PARAM ERRORStokes U parameter error
uErr_greal4 FIT_PARAM ERRORStokes U parameter error
uErr_rreal4 FIT_PARAM ERRORStokes U parameter error
uErr_ireal4 FIT_PARAM ERRORStokes U parameter error
uErr_zreal4 FIT_PARAM ERRORStokes U parameter error
mE1_ureal4 FIT_PARAMAdaptive E1 shape measure
mE1_greal4 FIT_PARAMAdaptive E1 shape measure
mE1_rreal4 FIT_PARAMAdaptive E1 shape measure
mE1_ireal4 FIT_PARAMAdaptive E1 shape measure
mE1_zreal4 FIT_PARAMAdaptive E1 shape measure
mE2_ureal4 FIT_PARAMAdaptive E2 shape measure
mE2_greal4 FIT_PARAMAdaptive E2 shape measure
mE2_rreal4 FIT_PARAMAdaptive E2 shape measure
mE2_ireal4 FIT_PARAMAdaptive E2 shape measure
mE2_zreal4 FIT_PARAMAdaptive E2 shape measure
mE1E1Err_ureal4 FIT_PARAM ERRORCovariance in E1/E1 shape measure
mE1E1Err_greal4 FIT_PARAM ERRORCovariance in E1/E1 shape measure
mE1E1Err_rreal4 FIT_PARAM ERRORCovariance in E1/E1 shape measure
mE1E1Err_ireal4 FIT_PARAM ERRORCovariance in E1/E1 shape measure
mE1E1Err_zreal4 FIT_PARAM ERRORCovariance in E1/E1 shape measure
mE1E2Err_ureal4 FIT_PARAM ERRORCovariance in E1/E2 shape measure
mE1E2Err_greal4 FIT_PARAM ERRORCovariance in E1/E2 shape measure
mE1E2Err_rreal4 FIT_PARAM ERRORCovariance in E1/E2 shape measure
mE1E2Err_ireal4 FIT_PARAM ERRORCovariance in E1/E2 shape measure
mE1E2Err_zreal4 FIT_PARAM ERRORCovariance in E1/E2 shape measure
mE2E2Err_ureal4 FIT_PARAM ERRORCovariance in E2/E2 shape measure
mE2E2Err_greal4 FIT_PARAM ERRORCovariance in E2/E2 shape measure
mE2E2Err_rreal4 FIT_PARAM ERRORCovariance in E2/E2 shape measure
mE2E2Err_ireal4 FIT_PARAM ERRORCovariance in E2/E2 shape measure
mE2E2Err_zreal4 FIT_PARAM ERRORCovariance in E2/E2 shape measure
mRrCc_ureal4 FIT_PARAMAdaptive ( + )
mRrCc_greal4 FIT_PARAMAdaptive ( + )
mRrCc_rreal4 FIT_PARAMAdaptive ( + )
mRrCc_ireal4 FIT_PARAMAdaptive ( + )
mRrCc_zreal4 FIT_PARAMAdaptive ( + )
mRrCcErr_ureal4 FIT_PARAM ERRORError in adaptive ( + )
mRrCcErr_greal4 FIT_PARAM ERRORError in adaptive ( + )
mRrCcErr_rreal4 FIT_PARAM ERRORError in adaptive ( + )
mRrCcErr_ireal4 FIT_PARAM ERRORError in adaptive ( + )
mRrCcErr_zreal4 FIT_PARAM ERRORError in adaptive ( + )
mCr4_ureal4 FIT_PARAMAdaptive fourth moment of object
mCr4_greal4 FIT_PARAMAdaptive fourth moment of object
mCr4_rreal4 FIT_PARAMAdaptive fourth moment of object
mCr4_ireal4 FIT_PARAMAdaptive fourth moment of object
mCr4_zreal4 FIT_PARAMAdaptive fourth moment of object
mE1PSF_ureal4 FIT_PARAMAdaptive E1 for PSF
mE1PSF_greal4 FIT_PARAMAdaptive E1 for PSF
mE1PSF_rreal4 FIT_PARAMAdaptive E1 for PSF
mE1PSF_ireal4 FIT_PARAMAdaptive E1 for PSF
mE1PSF_zreal4 FIT_PARAMAdaptive E1 for PSF
mE2PSF_ureal4 FIT_PARAMAdaptive E2 for PSF
mE2PSF_greal4 FIT_PARAMAdaptive E2 for PSF
mE2PSF_rreal4 FIT_PARAMAdaptive E2 for PSF
mE2PSF_ireal4 FIT_PARAMAdaptive E2 for PSF
mE2PSF_zreal4 FIT_PARAMAdaptive E2 for PSF
mRrCcPSF_ureal4 FIT_PARAMAdaptive ( + ) for PSF
mRrCcPSF_greal4 FIT_PARAMAdaptive ( + ) for PSF
mRrCcPSF_rreal4 FIT_PARAMAdaptive ( + ) for PSF
mRrCcPSF_ireal4 FIT_PARAMAdaptive ( + ) for PSF
mRrCcPSF_zreal4 FIT_PARAMAdaptive ( + ) for PSF
mCr4PSF_ureal4 FIT_PARAMAdaptive fourth moment for PSF
mCr4PSF_greal4 FIT_PARAMAdaptive fourth moment for PSF
mCr4PSF_rreal4 FIT_PARAMAdaptive fourth moment for PSF
mCr4PSF_ireal4 FIT_PARAMAdaptive fourth moment for PSF
mCr4PSF_zreal4 FIT_PARAMAdaptive fourth moment for PSF
isoRowc_ureal4pixFIT_PARAMIsophotal row centroid
isoRowc_greal4pixFIT_PARAMIsophotal row centroid
isoRowc_rreal4pixFIT_PARAMIsophotal row centroid
isoRowc_ireal4pixFIT_PARAMIsophotal row centroid
isoRowc_zreal4pixFIT_PARAMIsophotal row centroid
isoRowcErr_ureal4pixFIT_PARAMIsophotal row centroid error. PLACEHOLDER, set to -9999 or -1000
isoRowcErr_greal4pixFIT_PARAMIsophotal row centroid error. PLACEHOLDER, set to -9999 or -1000
isoRowcErr_rreal4pixFIT_PARAMIsophotal row centroid error. PLACEHOLDER, set to -9999 or -1000
isoRowcErr_ireal4pixFIT_PARAMIsophotal row centroid error. PLACEHOLDER, set to -9999 or -1000
isoRowcErr_zreal4pixFIT_PARAMIsophotal row centroid error. PLACEHOLDER, set to -9999 or -1000
isoRowcGrad_ureal4pix/(mag/arcsec^2)FIT_PARAMGradient in row centroid with isophote
isoRowcGrad_greal4pix/(mag/arcsec^2)FIT_PARAMGradient in row centroid with isophote
isoRowcGrad_rreal4pix/(mag/arcsec^2)FIT_PARAMGradient in row centroid with isophote
isoRowcGrad_ireal4pix/(mag/arcsec^2)FIT_PARAMGradient in row centroid with isophote
isoRowcGrad_zreal4pix/(mag/arcsec^2)FIT_PARAMGradient in row centroid with isophote
isoColc_ureal4pixFIT_PARAMIsophotal column centroid
isoColc_greal4pixFIT_PARAMIsophotal column centroid
isoColc_rreal4pixFIT_PARAMIsophotal column centroid
isoColc_ireal4pixFIT_PARAMIsophotal column centroid
isoColc_zreal4pixFIT_PARAMIsophotal column centroid
isoColcErr_ureal4pixFIT_PARAMIsophotal column centroid error. PLACEHOLDER, set to -9999 or -1000
isoColcErr_greal4pixFIT_PARAMIsophotal column centroid error. PLACEHOLDER, set to -9999 or -1000
isoColcErr_rreal4pixFIT_PARAMIsophotal column centroid error. PLACEHOLDER, set to -9999 or -1000
isoColcErr_ireal4pixFIT_PARAMIsophotal column centroid error. PLACEHOLDER, set to -9999 or -1000
isoColcErr_zreal4pixFIT_PARAMIsophotal column centroid error. PLACEHOLDER, set to -9999 or -1000
isoColcGrad_ureal4pix/(mag/arcsec^2)FIT_PARAMGradient in column centroid with isophote
isoColcGrad_greal4pix/(mag/arcsec^2)FIT_PARAMGradient in column centroid with isophote
isoColcGrad_rreal4pix/(mag/arcsec^2)FIT_PARAMGradient in column centroid with isophote
isoColcGrad_ireal4pix/(mag/arcsec^2)FIT_PARAMGradient in column centroid with isophote
isoColcGrad_zreal4pix/(mag/arcsec^2)FIT_PARAMGradient in column centroid with isophote
isoA_ureal4pixEXTENSION_RADIsophotal major axis
isoA_greal4pixEXTENSION_RADIsophotal major axis
isoA_rreal4pixEXTENSION_RADIsophotal major axis
isoA_ireal4pixEXTENSION_RADIsophotal major axis
isoA_zreal4pixEXTENSION_RADIsophotal major axis
isoAErr_ureal4pixEXTENSION_RAD ERRORIsophotal major axis error. PLACEHOLDER, set to -9999 or -1000
isoAErr_greal4pixEXTENSION_RAD ERRORIsophotal major axis error. PLACEHOLDER, set to -9999 or -1000
isoAErr_rreal4pixEXTENSION_RAD ERRORIsophotal major axis error. PLACEHOLDER, set to -9999 or -1000
isoAErr_ireal4pixEXTENSION_RAD ERRORIsophotal major axis error. PLACEHOLDER, set to -9999 or -1000
isoAErr_zreal4pixEXTENSION_RAD ERRORIsophotal major axis error. PLACEHOLDER, set to -9999 or -1000
isoB_ureal4pixEXTENSION_SMINIsophotal minor axis
isoB_greal4pixEXTENSION_SMINIsophotal minor axis
isoB_rreal4pixEXTENSION_SMINIsophotal minor axis
isoB_ireal4pixEXTENSION_SMINIsophotal minor axis
isoB_zreal4pixEXTENSION_SMINIsophotal minor axis
isoBErr_ureal4pixEXTENSION_SMIN ERRORIsophotal minor axis error. PLACEHOLDER, set to -9999 or -1000
isoBErr_greal4pixEXTENSION_SMIN ERRORIsophotal minor axis error. PLACEHOLDER, set to -9999 or -1000
isoBErr_rreal4pixEXTENSION_SMIN ERRORIsophotal minor axis error. PLACEHOLDER, set to -9999 or -1000
isoBErr_ireal4pixEXTENSION_SMIN ERRORIsophotal minor axis error. PLACEHOLDER, set to -9999 or -1000
isoBErr_zreal4pixEXTENSION_SMIN ERRORIsophotal minor axis error. PLACEHOLDER, set to -9999 or -1000
isoAGrad_ureal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in major axis at the isophote
isoAGrad_greal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in major axis at the isophote
isoAGrad_rreal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in major axis at the isophote
isoAGrad_ireal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in major axis at the isophote
isoAGrad_zreal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in major axis at the isophote
isoBGrad_ureal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in minor axis at the isophote
isoBGrad_greal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in minor axis at the isophote
isoBGrad_rreal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in minor axis at the isophote
isoBGrad_ireal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in minor axis at the isophote
isoBGrad_zreal4arcsec/(mag/arcsec^2)FIT_PARAMGradient in minor axis at the isophote
isoPhi_ureal4degFIT_PARAMIsophotal position angle (+N thru E)
isoPhi_greal4degFIT_PARAMIsophotal position angle (+N thru E)
isoPhi_rreal4degFIT_PARAMIsophotal position angle (+N thru E)
isoPhi_ireal4degFIT_PARAMIsophotal position angle (+N thru E)
isoPhi_zreal4degFIT_PARAMIsophotal position angle (+N thru E)
isoPhiErr_ureal4degFIT_PARAMIsophotal position angle error. PLACEHOLDER, set to -9999 or -1000
isoPhiErr_greal4degFIT_PARAMIsophotal position angle error. PLACEHOLDER, set to -9999 or -1000
isoPhiErr_rreal4degFIT_PARAMIsophotal position angle error. PLACEHOLDER, set to -9999 or -1000
isoPhiErr_ireal4degFIT_PARAMIsophotal position angle error. PLACEHOLDER, set to -9999 or -1000
isoPhiErr_zreal4degFIT_PARAMIsophotal position angle error. PLACEHOLDER, set to -9999 or -1000
isoPhiGrad_ureal4deg/(mag/arcsec^2)FIT_PARAMGradient in positional angle with isophote
isoPhiGrad_greal4deg/(mag/arcsec^2)FIT_PARAMGradient in positional angle with isophote
isoPhiGrad_rreal4deg/(mag/arcsec^2)FIT_PARAMGradient in positional angle with isophote
isoPhiGrad_ireal4deg/(mag/arcsec^2)FIT_PARAMGradient in positional angle with isophote
isoPhiGrad_zreal4deg/(mag/arcsec^2)FIT_PARAMGradient in positional angle with isophote
deVRad_ureal4arcsecEXTENSION_RAD FIT_PARAMDeVaucouleurs fit scale radius
deVRad_greal4arcsecEXTENSION_RAD FIT_PARAMDeVaucouleurs fit scale radius
deVRad_rreal4arcsecEXTENSION_RAD FIT_PARAMDeVaucouleurs fit scale radius
deVRad_ireal4arcsecEXTENSION_RAD FIT_PARAMDeVaucouleurs fit scale radius
deVRad_zreal4arcsecEXTENSION_RAD FIT_PARAMDeVaucouleurs fit scale radius
deVRadErr_ureal4arcsecEXTENSION_RAD ERRORDeVaucouleurs fit scale radius error
deVRadErr_greal4arcsecEXTENSION_RAD ERRORDeVaucouleurs fit scale radius error
deVRadErr_rreal4arcsecEXTENSION_RAD ERRORDeVaucouleurs fit scale radius error
deVRadErr_ireal4arcsecEXTENSION_RAD ERRORDeVaucouleurs fit scale radius error
deVRadErr_zreal4arcsecEXTENSION_RAD ERRORDeVaucouleurs fit scale radius error
deVAB_ureal4 FIT_PARAMDeVaucouleurs fit a/b
deVAB_greal4 FIT_PARAMDeVaucouleurs fit a/b
deVAB_rreal4 FIT_PARAMDeVaucouleurs fit a/b
deVAB_ireal4 FIT_PARAMDeVaucouleurs fit a/b
deVAB_zreal4 FIT_PARAMDeVaucouleurs fit a/b
deVABErr_ureal4 FIT_PARAM ERRORDeVaucouleurs fit a/b error
deVABErr_greal4 FIT_PARAM ERRORDeVaucouleurs fit a/b error
deVABErr_rreal4 FIT_PARAM ERRORDeVaucouleurs fit a/b error
deVABErr_ireal4 FIT_PARAM ERRORDeVaucouleurs fit a/b error
deVABErr_zreal4 FIT_PARAM ERRORDeVaucouleurs fit a/b error
deVPhi_ureal4degFIT_PARAM POS_ANG_GENERALDeVaucouleurs fit position angle (+N thru E)
deVPhi_greal4degFIT_PARAM POS_ANG_GENERALDeVaucouleurs fit position angle (+N thru E)
deVPhi_rreal4degFIT_PARAM POS_ANG_GENERALDeVaucouleurs fit position angle (+N thru E)
deVPhi_ireal4degFIT_PARAM POS_ANG_GENERALDeVaucouleurs fit position angle (+N thru E)
deVPhi_zreal4degFIT_PARAM POS_ANG_GENERALDeVaucouleurs fit position angle (+N thru E)
deVPhiErr_ureal4degFIT_PARAM POS_ANG_GENERAL ERRORDeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000
deVPhiErr_greal4degFIT_PARAM POS_ANG_GENERAL ERRORDeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000
deVPhiErr_rreal4degFIT_PARAM POS_ANG_GENERAL ERRORDeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000
deVPhiErr_ireal4degFIT_PARAM POS_ANG_GENERAL ERRORDeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000
deVPhiErr_zreal4degFIT_PARAM POS_ANG_GENERAL ERRORDeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000
deVMag_ureal4magPHOT_SDSS_U FIT_PARAMDeVaucouleurs magnitude fit
deVMag_greal4magPHOT_SDSS_G FIT_PARAMDeVaucouleurs magnitude fit
deVMag_rreal4magPHOT_SDSS_R FIT_PARAMDeVaucouleurs magnitude fit
deVMag_ireal4magPHOT_SDSS_I FIT_PARAMDeVaucouleurs magnitude fit
deVMag_zreal4magPHOT_SDSS_Z FIT_PARAMDeVaucouleurs magnitude fit
deVMagErr_ureal4magPHOT_SDSS_U ERROR FIT_PARAMDeVaucouleurs magnitude fit error
deVMagErr_greal4magPHOT_SDSS_G ERROR FIT_PARAMDeVaucouleurs magnitude fit error
deVMagErr_rreal4magPHOT_SDSS_R ERROR FIT_PARAMDeVaucouleurs magnitude fit error
deVMagErr_ireal4magPHOT_SDSS_I ERROR FIT_PARAMDeVaucouleurs magnitude fit error
deVMagErr_zreal4magPHOT_SDSS_Z ERROR FIT_PARAMDeVaucouleurs magnitude fit error
expRad_ureal4arcsecEXTENSION_RAD FIT_PARAMExponetial fit scale radius
expRad_greal4arcsecEXTENSION_RAD FIT_PARAMExponetial fit scale radius
expRad_rreal4arcsecEXTENSION_RAD FIT_PARAMExponetial fit scale radius
expRad_ireal4arcsecEXTENSION_RAD FIT_PARAMExponetial fit scale radius
expRad_zreal4arcsecEXTENSION_RAD FIT_PARAMExponetial fit scale radius
expRadErr_ureal4arcsecEXTENSION_RAD ERRORExponetial fit scale radius error
expRadErr_greal4arcsecEXTENSION_RAD ERRORExponetial fit scale radius error
expRadErr_rreal4arcsecEXTENSION_RAD ERRORExponetial fit scale radius error
expRadErr_ireal4arcsecEXTENSION_RAD ERRORExponetial fit scale radius error
expRadErr_zreal4arcsecEXTENSION_RAD ERRORExponetial fit scale radius error
expAB_ureal4 FIT_PARAMExponential fit a/b
expAB_greal4 FIT_PARAMExponential fit a/b
expAB_rreal4 FIT_PARAMExponential fit a/b
expAB_ireal4 FIT_PARAMExponential fit a/b
expAB_zreal4 FIT_PARAMExponential fit a/b
expABErr_ureal4 FIT_PARAMExponential fit a/b
expABErr_greal4 FIT_PARAMExponential fit a/b
expABErr_rreal4 FIT_PARAMExponential fit a/b
expABErr_ireal4 FIT_PARAMExponential fit a/b
expABErr_zreal4 FIT_PARAMExponential fit a/b
expPhi_ureal4degFIT_PARAM POS_ANG_GENERALExponential fit position angle (+N thru E)
expPhi_greal4degFIT_PARAM POS_ANG_GENERALExponential fit position angle (+N thru E)
expPhi_rreal4degFIT_PARAM POS_ANG_GENERALExponential fit position angle (+N thru E)
expPhi_ireal4degFIT_PARAM POS_ANG_GENERALExponential fit position angle (+N thru E)
expPhi_zreal4degFIT_PARAM POS_ANG_GENERALExponential fit position angle (+N thru E)
expPhiErr_ureal4degFIT_PARAM POS_ANG_GENERAL ERRORExponential fit position angle error. PLACEHOLDER, set to -9999 or -1000
expPhiErr_greal4degFIT_PARAM POS_ANG_GENERAL ERRORExponential fit position angle error. PLACEHOLDER, set to -9999 or -1000
expPhiErr_rreal4degFIT_PARAM POS_ANG_GENERAL ERRORExponential fit position angle error. PLACEHOLDER, set to -9999 or -1000
expPhiErr_ireal4degFIT_PARAM POS_ANG_GENERAL ERRORExponential fit position angle error. PLACEHOLDER, set to -9999 or -1000
expPhiErr_zreal4degFIT_PARAM POS_ANG_GENERAL ERRORExponential fit position angle error. PLACEHOLDER, set to -9999 or -1000
expMag_ureal4magPHOT_SDSS_UExponential fit
expMag_greal4magPHOT_SDSS_GExponential fit
expMag_rreal4magPHOT_SDSS_RExponential fit
expMag_ireal4magPHOT_SDSS_IExponential fit
expMag_zreal4magPHOT_SDSS_ZExponential fit
expMagErr_ureal4magPHOT_SDSS_U ERRORExponential fit error
expMagErr_greal4magPHOT_SDSS_G ERRORExponential fit error
expMagErr_rreal4magPHOT_SDSS_R ERRORExponential fit error
expMagErr_ireal4magPHOT_SDSS_I ERRORExponential fit error
expMagErr_zreal4magPHOT_SDSS_Z ERRORExponential fit error
modelMag_ureal4magPHOT_SDSS_U FIT_PARAMbetter of DeV/Exp magnitude fit
modelMag_greal4magPHOT_SDSS_G FIT_PARAMbetter of DeV/Exp magnitude fit
modelMag_rreal4magPHOT_SDSS_R FIT_PARAMbetter of DeV/Exp magnitude fit
modelMag_ireal4magPHOT_SDSS_I FIT_PARAMbetter of DeV/Exp magnitude fit
modelMag_zreal4magPHOT_SDSS_Z FIT_PARAMbetter of DeV/Exp magnitude fit
modelMagErr_ureal4magPHOT_SDSS_U ERRORbetter of DeV/Exp magnitude fit error
modelMagErr_greal4magPHOT_SDSS_G ERRORbetter of DeV/Exp magnitude fit error
modelMagErr_rreal4magPHOT_SDSS_R ERRORbetter of DeV/Exp magnitude fit error
modelMagErr_ireal4magPHOT_SDSS_I ERRORbetter of DeV/Exp magnitude fit error
modelMagErr_zreal4magPHOT_SDSS_Z ERRORbetter of DeV/Exp magnitude fit error
texture_ureal4 FIT_PARAMTexture parameter
texture_greal4 FIT_PARAMTexture parameter
texture_rreal4 FIT_PARAMTexture parameter
texture_ireal4 FIT_PARAMTexture parameter
texture_zreal4 FIT_PARAMTexture parameter
lnLStar_ureal4 FIT_GOODNESSStar ln(likelihood)
lnLStar_greal4 FIT_GOODNESSStar ln(likelihood)
lnLStar_rreal4 FIT_GOODNESSStar ln(likelihood)
lnLStar_ireal4 FIT_GOODNESSStar ln(likelihood)
lnLStar_zreal4 FIT_GOODNESSStar ln(likelihood)
lnLExp_ureal4 FIT_GOODNESSExponential disk fit ln(likelihood)
lnLExp_greal4 FIT_GOODNESSExponential disk fit ln(likelihood)
lnLExp_rreal4 FIT_GOODNESSExponential disk fit ln(likelihood)
lnLExp_ireal4 FIT_GOODNESSExponential disk fit ln(likelihood)
lnLExp_zreal4 FIT_GOODNESSExponential disk fit ln(likelihood)
lnLDeV_ureal4 FIT_GOODNESSDeVaucouleurs fit ln(likelihood)
lnLDeV_greal4 FIT_GOODNESSDeVaucouleurs fit ln(likelihood)
lnLDeV_rreal4 FIT_GOODNESSDeVaucouleurs fit ln(likelihood)
lnLDeV_ireal4 FIT_GOODNESSDeVaucouleurs fit ln(likelihood)
lnLDeV_zreal4 FIT_GOODNESSDeVaucouleurs fit ln(likelihood)
fracDeV_ureal4 PHOT_FLUX_RATIOWeight of deV component in best composite model
fracDeV_greal4 PHOT_FLUX_RATIOWeight of deV component in best composite model
fracDeV_rreal4 PHOT_FLUX_RATIOWeight of deV component in best composite model
fracDeV_ireal4 PHOT_FLUX_RATIOWeight of deV component in best composite model
fracDeV_zreal4 PHOT_FLUX_RATIOWeight of deV component in best composite model
flags_uLink to PhotoFlagsbigint8 CODE_MISCObject detection flags per band
flags_gLink to PhotoFlagsbigint8 CODE_MISCObject detection flags per band
flags_rLink to PhotoFlagsbigint8 CODE_MISCObject detection flags per band
flags_iLink to PhotoFlagsbigint8 CODE_MISCObject detection flags per band
flags_zLink to PhotoFlagsbigint8 CODE_MISCObject detection flags per band
type_uLink to PhotoTypeint4 CLASS_OBJECTObject type classification per band
type_gLink to PhotoTypeint4 CLASS_OBJECTObject type classification per band
type_rLink to PhotoTypeint4 CLASS_OBJECTObject type classification per band
type_iLink to PhotoTypeint4 CLASS_OBJECTObject type classification per band
type_zLink to PhotoTypeint4 CLASS_OBJECTObject type classification per band
probPSF_ureal4 STAT_PROBABILITYProbablity object is a star in each filter.
probPSF_greal4 STAT_PROBABILITYProbablity object is a star in each filter.
probPSF_rreal4 STAT_PROBABILITYProbablity object is a star in each filter.
probPSF_ireal4 STAT_PROBABILITYProbablity object is a star in each filter.
probPSF_zreal4 STAT_PROBABILITYProbablity object is a star in each filter.
statusLink to PhotoStatusint4 CODE_MISCStatus of the object in the survey
rafloat8degPOS_EQ_RA_MAINJ2000 right ascension (r')
decfloat8degPOS_EQ_DEC_MAINJ2000 declination (r')
cxfloat8 POS_EQ_CART_Xunit vector for ra+dec
cyfloat8 POS_EQ_CART_Yunit vector for ra+dec
czfloat8 POS_EQ_CART_Zunit vector for ra+dec
raErrfloat8arcsecPOS_EQ_RA_ERRError in RA
decErrfloat8arcsecPOS_EQ_DEC_ERRError in dec
raDecCorrfloat8 CODE_MISCRA/dec correlation
bfloat8degPOS_GAL_LONGalactic latitude
lfloat8degPOS_GAL_LATGalactic longitude
offsetRa_ureal4arcsecPOS_OFFSETfilter position ra minus final ra (* cos(dec))
offsetRa_greal4arcsecPOS_OFFSETfilter position ra minus final ra (* cos(dec))
offsetRa_rreal4arcsecPOS_OFFSETfilter position ra minus final ra (* cos(dec))
offsetRa_ireal4arcsecPOS_OFFSETfilter position ra minus final ra (* cos(dec))
offsetRa_zreal4arcsecPOS_OFFSETfilter position ra minus final ra (* cos(dec))
offsetDec_ureal4arcsecPOS_OFFSETfilter position dec minus final dec
offsetDec_greal4arcsecPOS_OFFSETfilter position dec minus final dec
offsetDec_rreal4arcsecPOS_OFFSETfilter position dec minus final dec
offsetDec_ireal4arcsecPOS_OFFSETfilter position dec minus final dec
offsetDec_zreal4arcsecPOS_OFFSETfilter position dec minus final dec
primTargetLink to PrimTargetint4 CODE_MISCBit mask of primary target categories the object was selected in.
secTargetLink to SecTargetint4 CODE_MISCBit mask of secondary target categories the object was selected in.
seguePrimTargetint4 CODE_MISCBit mask of SEGUE primary target categories the object was selected in.
segueSecTargetint4 CODE_MISCBit mask of SEGUE secondary target categories the object was selected in.
extinction_ureal4magPHOT_EXTINCTION_GALExtinction in each filter
extinction_greal4magPHOT_EXTINCTION_GALExtinction in each filter
extinction_rreal4magPHOT_EXTINCTION_GALExtinction in each filter
extinction_ireal4magPHOT_EXTINCTION_GALExtinction in each filter
extinction_zreal4magPHOT_EXTINCTION_GALExtinction in each filter
priorityint4 CODE_MISCPriority bits
rhoreal4magEXTENSION_RADLog size for surface brightness: 5xlog(Petro radius in i band)
nProf_uint4 NUMBERNumber of Profile Bins
nProf_gint4 NUMBERNumber of Profile Bins
nProf_rint4 NUMBERNumber of Profile Bins
nProf_iint4 NUMBERNumber of Profile Bins
nProf_zint4 NUMBERNumber of Profile Bins
loadVersionint4 ID_VERSIONLoad Version
htmIDbigint8 CODE_HTM20-deep hierarchical trangular mesh ID of this object
fieldIDbigint8 ID_FIELDLink to the field this object is in
parentIDbigint8 ID_PARENTPointer to parent (if object deblended) or BRIGHT detection (if object has one), else 0
specObjIDbigint8 ID_CATALOGPointer to the spectrum of object, if exists, else 0
ureal4magPHOT_SDSS_U FIT_PARAMShorthand alias for modelMag
greal4magPHOT_SDSS_G FIT_PARAMShorthand alias for modelMag
rreal4magPHOT_SDSS_R FIT_PARAMShorthand alias for modelMag
ireal4magPHOT_SDSS_I FIT_PARAMShorthand alias for modelMag
zreal4magPHOT_SDSS_Z FIT_PARAMShorthand alias for modelMag
err_ureal4magPHOT_SDSS_U ERRORError in modelMag alias
err_greal4magPHOT_SDSS_G ERRORError in modelMag alias
err_rreal4magPHOT_SDSS_R ERRORError in modelMag alias
err_ireal4magPHOT_SDSS_I ERRORError in modelMag alias
err_zreal4magPHOT_SDSS_Z ERRORError in modelMag alias
dered_ureal4magPHOT_SDSS_USimplified mag, corrected for extinction: modelMag-extinction
dered_greal4magPHOT_SDSS_GSimplified mag, corrected for extinction: modelMag-extinction
dered_rreal4magPHOT_SDSS_RSimplified mag, corrected for extinction: modelMag-extinction
dered_ireal4magPHOT_SDSS_ISimplified mag, corrected for extinction: modelMag-extinction
dered_zreal4magPHOT_SDSS_ZSimplified mag, corrected for extinction: modelMag-extinction


Filter names to return (for use by DAS)

If you plan to feed the results of this form query to the Data Archive Server (DAS) data retrieval webform to get the FITS files corresponding to the selected objects, which filters (if any) do you want fed to the subsequent DAS webform query? Note that you must also include the run, rerun, camcol, field and obj columns in your output for DAS retrieval. These columns are included in the minimal output parameter selection. You must also select CSV output format and save the output to a file on your local system, then upload this file to the DAS by entering its name in the DAS form (under Step 3 "...select file to upload").


Position Constraints

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


Rectangular Search

Do you wish to search a rectangular box in ra and dec?

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

Do you wish to search a circle on the sky centered on a single ra and dec?

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)

Proximity Search

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

For a given RA and DEC, the proximity search returns the closest object within the search radius that meets your search constraints.

The list can be either entered directly into the webform box or uploaded as a file from your machine. In either case, it must be a comma or space separated list containing fields for ra, dec, and (optionally) sep (radius). The order of these fields in the list is unimportant, but the first line of the list must contain the order of the fields in comma- or space-separated format; e.g.:

ra, dec, sep

Valid formats (J2000):

  • 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 arcseconds (S.ss)

No Position Constraint

Do you want to apply no positional constraints in your query?
CAVEAT EMPTOR: This will result in a search over the entire database, which will probably take a very long time to finish (and slow other users down). Please be sure that this is what you want to do, or at least select a limited number of objects to return.


Spectroscopy Constraints

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


Redshift and Confidence

Do you want to search over a given range of redshift and redshift confidence?

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).

Valid ranges for redshift confidence are from 0 (poor) to 1 (excellent). Setting a minimum redshift confidence of 0.95 is typical for selecting good galaxy and/or QSO redshift samples.


Spectral Classification

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

The options are:

namevaluedescription
UNKNOWN0Spectrum not classifiable (zConf < 0.25).
STAR1Spectrum of a star.
GALAXY2Spectrum of a galaxy.
QSO3Spectrum of a quasi-stellar object.
HIZ_QSO4Spectrum of a high-redshift quasar (z>2.3), whose redshift is confirmed by a Ly-alpha estimator (see "Spectroscopic Redshift and Type Determination" section in Algorithms).
SKY5Spectrum of blank sky.
STAR_LATE6Star dominated bt molecular bands M or later.
GAL_EM7Emission line galaxy (placeholder).


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. The bits are defined as:

namevaluedescription
TARGET_QSO_HIZ0x00000001 
TARGET_QSO_CAP0x00000002 
TARGET_QSO_SKIRT0x00000004 
TARGET_QSO_FIRST_CAP0x00000008 
TARGET_QSO_FIRST_SKIRT0x00000010 
TARGET_GALAXY_RED0x00000020 
TARGET_GALAXY0x00000040 
TARGET_GALAXY_BIG0x00000080 
TARGET_GALAXY_BRIGHT_CORE0x00000100 
TARGET_ROSAT_A0x00000200 
TARGET_ROSAT_B0x00000400 
TARGET_ROSAT_C0x00000800 
TARGET_ROSAT_D0x00001000 
TARGET_STAR_BHB0x00002000 
TARGET_STAR_CARBON0x00004000 
TARGET_STAR_BROWN_DWARF0x00008000 
TARGET_STAR_SUB_DWARF0x00010000 
TARGET_STAR_CATY_VAR0x00020000 
TARGET_STAR_RED_DWARF0x00040000 
TARGET_STAR_WHITE_DWARF0x00080000 
TARGET_SERENDIP_BLUE0x00100000 
TARGET_SERENDIP_FIRST0x00200000 
TARGET_SERENDIP_RED0x00400000 
TARGET_SERENDIP_DISTANT0x00800000 
TARGET_SERENDIP_MANUAL0x01000000 
TARGET_QSO_FAINT0x02000000 
TARGET_GALAXY_RED_II0x04000000 
TARGET_ROSAT_E0x08000000 
TARGET_STAR_PN0x10000000 
TARGET_QSO_REJECT0x20000000 


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. The bits are defined as:

namevaluedescription
TARGET_LIGHT_TRAP0x00000001 
TARGET_REDDEN_STD0x00000002 
TARGET_TEST_TARGET0x00000004 
TARGET_QA0x00000008 
TARGET_SKY0x00000010 
TARGET_SPECTROPHOTO_STD0x00000020 
TARGET_GUIDE_STAR0x00000040 
TARGET_BUNDLE_HOLE0x00000080 
TARGET_QUALITY_HOLE0x00000100 
TARGET_HOT_STD0x00000200 


Imaging Constraints

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


Sky Version

You may constrain your search using either the values of the imaging parameters used in spectroscopic target selection ("Target") or the "latest and greatest" values of the imaging parameters ("Best"). See also the glossary item for Sky Version .

Magnitude Type

Further, your may constrain your search using either:
  1. Petrosian magnitudes and colors,
  2. PSF magnitudes and colors, or
  3. model magnitudes and colors.
Important: Please read the documentation on "Which magnitude should I use?"

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 (?)

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). The object photo flags are:

namevaluedescription
CANONICAL_CENTER0x0000000000000001Measurements used the center in r*, rather than the locally determined center.
BRIGHT0x0000000000000002Object detected in first, bright object-finding; generally r*<17.5
EDGE0x0000000000000004Object is too close to edge of frame
BLENDED0x0000000000000008Object had multiple peaks detected within it; was thus a candidate to be a deblending parent.
CHILD0x0000000000000010Object is the product of an attempt to deblend a BLENDED object.
PEAKCENTER0x0000000000000020Given center is position of peak pixel, rather than based on the maximum-likelihood estimator.
NODEBLEND0x0000000000000040No deblending was attempted on this object, even though it is BLENDED.
NOPROFILE0x0000000000000080Object was too small or too close to the edge to estimate a radial profile.
NOPETRO0x0000000000000100No valid Petrosian radius was found for this object.
MANYPETRO0x0000000000000200More than one Petrosian radius was found.
NOPETRO_BIG0x0000000000000400Petrosian radius is beyond the last point in the radial profile.
DEBLEND_TOO_MANY_PEAKS0x0000000000000800There were more than 25 peaks in this object to deblend; deblended brightest 25.
COSMIC_RAY0x0000000000001000Contains a pixel interpreted to be part of a cosmic ray.
MANYR500x0000000000002000Object has more than one 50% light radius.
MANYR900x0000000000004000Object has more than one 90% light radius.
BAD_RADIAL0x0000000000008000Some of the points in the given radial profile have negative signal-to-noise ratio. Not a significant parameter.
INCOMPLETE_PROFILE0x0000000000010000Petrosian radius intersects the edge of the frame.
INTERP0x0000000000020000Object contains one or more pixels whose values were determined by interpolation.
SATURATED0x0000000000040000Object contains one or more saturated pixels
NOTCHECKED0x0000000000080000There are pixels in the object which were not checked to see if they included a local peak, such as cores of saturated stars.
SUBTRACTED0x0000000000100000This BRIGHT object had its wings subtracted from the frame
NOSTOKES0x0000000000200000Object has no measured Stokes params
BADSKY0x0000000000400000The sky level is so bad that the highest pixel in the object is very negative; far more so than a mere non-detection. No further analysis is attempted.
PETROFAINT0x0000000000800000At least one possible Petrosian radius was rejected as the surface brightness at r_P was too low. If NOPETRO is not set, a different, acceptable Petrosian radius was found.
TOO_LARGE0x0000000001000000The object is too large for us to measure its profile (it extends beyond a radius of approximately 260), or at least one child is larger than half a frame.
DEBLENDED_AS_PSF0x0000000002000000Deblender treated obj as PSF
DEBLEND_PRUNED0x0000000004000000At least one child was removed because its image was too similar to a supposedly different child.
ELLIPFAINT0x0000000008000000Object center is fainter than the isophote whose shape is desired, so the isophote properties are not measured. Also flagged if profile is incomplete.
BINNED10x0000000010000000Object was detected in 1x1 binned image
BINNED20x0000000020000000Object was detected in 2x2 binned image, after unbinned detections are replaced by background.
BINNED40x0000000040000000Object was detected in 4x4 binned image
MOVED0x0000000080000000The deblender identified this object as possibly moving.
DEBLENDED_AS_MOVING0x0000000100000000A MOVED object that the deblender treated as moving.
NODEBLEND_MOVING0x0000000200000000A MOVED object that the deblender did not treat as moving.
TOO_FEW_DETECTIONS0x0000000400000000A child of this object was not detected in enough bands to reliably deblend as moving.
BAD_MOVING_FIT0x0000000800000000Moving fit too poor to be believable.
STATIONARY0x0000001000000000This object was consistent with being stationary.
PEAKS_TOO_CLOSE0x0000002000000000At least some peaks within this object were too close to be deblended, thus they were merged into a single peak.
MEDIAN_CENTER0x0000004000000000Center given is of median-smoothed image.
LOCAL_EDGE0x0000008000000000Center in at least one band is too close to an edge.
BAD_COUNTS_ERROR0x0000010000000000An object containing interpolated pixels had too few good pixels to form a reliable estimate of its error; the quoted error may be underestimated.
BAD_MOVING_FIT_CHILD0x0000020000000000A possible moving child's velocity fit was too poor, so it was discarded and the parent was not deblended as moving.
DEBLEND_UNASSIGNED_FLUX0x0000040000000000After deblending, a significant fraction of flux was not assigned to any children.
SATUR_CENTER0x0000080000000000Object center is close to at least one saturated pixel.
INTERP_CENTER0x0000100000000000Object center is close to at least one interpolated pixel.
DEBLENDED_AT_EDGE0x0000200000000000An object close enough to the edge of the frame normally not deblended, is deblended anyway. Only set for objects large enough to be EDGE in all fields/strips.
DEBLEND_NOPEAK0x0000400000000000There was no detected peak within this child in at least one band.
PSF_FLUX_INTERP0x0000800000000000Greater than 20% of the PSF flux is from interpolated pixels.
TOO_FEW_GOOD_DETECTIONS0x0001000000000000A child of this object had too few good detections to be deblended as moving.
CENTER_OFF_AIMAGE0x0002000000000000At least one peak's center lay off of the atlas image. This can happen when the object is deblended as moving, or if the astrometry is bad.
DEBLEND_DEGENERATE0x0004000000000000Two or more candidate children were essentially identical; one one was retained.
BRIGHTEST_GALAXY_CHILD0x0008000000000000This child is the brightest family member (in this band) that is classified as a galaxy.
CANONICAL_BAND0x0010000000000000This is the 'canonical' band; r unless the object is undetected in the r filter.
AMOMENT_FAINT0x0020000000000000Object was too faint to measure weighted moments such as mE1_g; unweighted values are reported.
AMOMENT_SHIFT0x0040000000000000Centroid shift too large when measuring adaptive moments. Row/Column shifts are reported in mE1, mE2.
AMOMENT_MAXITER0x0080000000000000Maximum number of iterations exceeded measuring e.g. mE2_g; unweighted values are reported.
MAYBE_CR0x0100000000000000There is reasonable suspicion that this object is actually a cosmic ray.
MAYBE_EGHOST0x0200000000000000There is reasonable suspicion that this object is actually a ghost produced by the CCD electronics.
NOTCHECKED_CENTER0x0400000000000000The center of this object lies in a region that was not searched for objects.
OBJECT2_HAS_SATUR_DN0x0800000000000000The electrons in this saturated object's bleed trails have been included in its estimated flux.
OBJECT2_DEBLEND_PEEPHOLE0x1000000000000000Deblend was modified by the deblender's peephole optimiser.
GROWN_MERGED0x2000000000000000Growing led to a merger
HAS_CENTER0x4000000000000000Object has a canonical center
RESERVED0x8000000000000000Not used


Ani Thakar
Last Modified: Mar 10, 2004