SkyServer Help

Use the IQS (SQS) to make intermediate-level queries on the DR6 CAS database for objects in the DR6 imaging (spectroscopic) sample.

Parameters to Return
Spectroscopy Parameters
Imaging Parameters
Filter names to return (for use by DAS)
Position Constraints
Rectangular Search
Cone Search
Proximity Search
No Position Constraint
Spectroscopy Constraints
Redshift and Confidence
Spectral Classification
Primtarget
Sectarget
Imaging Constraints
Sky Version
Magnitude Type
Magnitudes
Colors
Object Type
Photo Flags

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):

name type length unit ucd description

specObjID bigint 8 ID_CATALOG Unique ID

mjd int 4 MJD TIME_DATE MJD of observation

plate smallint 2 ID_PLATE Plate ID

tile smallint 2 ID_PLATE Tile ID

xFocal float 8 POS_CCD_X X Focal

yFocal float 8 POS_CCD_Y Y Focal

fiberID smallint 2 ID_FIBER Fiber ID

z real 4 REDSHIFT Final Redshift

zErr real 4 REDSHIFT ERROR Redshift error

zConf real 4 REDSHIFT STAT_PROBABILITY Redshift confidence

zStatus smallint 2 CODE_QUALITY Redshift status

specClass smallint 2 CLASS_OBJECT Spectral Classification

zWarning int 4 CODE_QUALITY Warning Flags

velDisp real 4 ??? VELOC_DISP Velocity Dispersion

velDispErr real 4 VELOC_DISP ERROR Velocity Dispersion error

eCoeff_0 real 4 FIT_PARAM Expansion Coeff for Galaxies

eCoeff_1 real 4 FIT_PARAM Expansion Coeff for Galaxies

eCoeff_2 real 4 FIT_PARAM Expansion Coeff for Galaxies

eCoeff_3 real 4 FIT_PARAM Expansion Coeff for Galaxies

eCoeff_4 real 4 FIT_PARAM Expansion Coeff for Galaxies

eClass real 4 CLASS_OBJECT Classification

nGood int 4 pix NUMBER Good Pixels

sn_0 real 4 INST_S/N Median S/N in g'

sn_1 real 4 INST_S/N Median S/N in r'

sn_2 real 4 INST_S/N Median S/N in i'

mag_0 real 4 mag PHOT_SDSS_G Synthetic Magnitude in g'

mag_1 real 4 mag PHOT_SDSS_R Synthetic Magnitude in r'

mag_2 real 4 mag PHOT_SDSS_I Synthetic Magnitude in i'

ra float 8 deg POS_EQ_RA_MAIN ra in J2000

dec float 8 deg POS_EQ_DEC_MAIN dec in 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

htmID bigint 8 CODE_HTM 20 deep Hierarchical Triangular Mesh ID

fiberMag_u real 4 luptitudes PHOT_SDSS_U Fiber Magnitudes

fiberMag_g real 4 luptitudes PHOT_SDSS_G Fiber Magnitudes

fiberMag_r real 4 luptitudes PHOT_SDSS_R Fiber Magnitudes

fiberMag_i real 4 luptitudes PHOT_SDSS_I Fiber Magnitudes

fiberMag_z real 4 luptitudes PHOT_SDSS_Z Fiber Magnitudes

primTarget int 4 CODE_MISC Specifies which primary target catagories the object was selected in.

secTarget int 4 CODE_MISC Specifies which secondary target catagories the object was selected in.

seguePrimTarget int 4 CODE_MISC Specifies which SEGUE primary target catagories the object was selected in.

segueSecTarget int 4 CODE_MISC Specifies which SEGUE secondary target catagories the object was selected in.

otherPrimTarget int 4 CODE_MISC Specifies which other program primary target catagories the object was selected in.

otherSecTarget int 4 CODE_MISC Specifies which other program secondary target catagories the object was selected in.

pixMin smallint 2 pix INST_DET_LIMIT Pixmin

pixMax smallint 2 pix INST_DET_LIMIT Pixmax

sci_sn real 4 CODE_MISC Science signal to noise ratio

smear_sn real 4 CODE_MISC Smear signal to noise ratio

sm_leg_0 real 4 CODE_MISC 1st legendre coeff. for smear correct

sm_leg_1 real 4 CODE_MISC 2nd legendre coeff. for smear correct

sm_leg_2 real 4 CODE_MISC 3rd legendre coeff. for smear correct

sciencePrimary smallint 2 CODE_MISC Deemed to be science-worthy (defines default view SpecObj)

loadVersion int 4 ID_TRACER Load Version

plateID bigint 8 ID_PLATE Link to plate on which the spectrum was taken

spectrographID smallint 2 INST_ID which spectrograph (1,2)

throughput int 4 ??? NUMBER fiber throughput as measured by mapper

objType int 4 CLASS_OBJECT object type (plPlugMap style)

objTypeName varchar 32 CLASS_OBJECT Object Type as string

targetID bigint 8 ID_CATALOG ID of Target

targetObjID bigint 8 ID_CATALOG ID of target PhotoObj

bestObjID bigint 8 ID_MAIN ID of best PhotoObj

img image 16 SPECT GIF 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):

name type length unit ucd description

objID bigint 8 ID_MAIN Unique SDSS identifier composed from [skyVersion,rerun,run,camcol,field,obj].

skyVersion tinyint 1 CODE_MISC 0 = OPDB target, 1 = OPDB best

run smallint 2 OBS_RUN Run number

rerun smallint 2 CODE_MISC Rerun number

camcol tinyint 1 INST_ID Camera column

field smallint 2 ID_FIELD Field number

obj smallint 2 ID_NUMBER The object id within a field. Usually changes between reruns of the same field.

mode tinyint 1 CLASS_OBJECT 1: primary, 2: secondary, 3: family object, 4: outside chunk boundary.

nChild smallint 2 NUMBER 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 CLASS_OBJECT Morphological type classification of the object.

clean int 4 CODE_MISC Clean photometry flag for point sources (1=clean, 0=unclean).

probPSF real 4 STAT_PROBABILITY Probability that the object is a star. Currently 0 if type == 3 (galaxy), 1 if type == 6 (star).

insideMask tinyint 1 CODE_MISC Flag to indicate whether object is inside a mask and why

flags bigint 8 CODE_MISC Photo Object Attribute Flags

rowc real 4 pix POS_CCD_Y Row center position (r' coordinates)

rowcErr real 4 pix POS_CCD_Y ERROR Row center position error (r' coordinates)

colc real 4 pix POS_CCD_X Column center position (r' coordinates)

colcErr real 4 pix POS_CCD_X ERROR Column center position error (r' coordinates)

rowv real 4 deg/day POS_ANG_VEL Row-component of object's velocity.

rowvErr real 4 deg/day POS_ANG_VEL ERROR Row-component of object's velocity error

colv real 4 deg/day POS_ANG_VEL Column-component of object's velocity.

colvErr real 4 deg/day POS_ANG_VEL ERROR Column-component of object's velocity error

rowc_u real 4 pix POS_CCD_Y Row center

rowc_g real 4 pix POS_CCD_Y Row center

rowc_r real 4 pix POS_CCD_Y Row center

rowc_i real 4 pix POS_CCD_Y Row center

rowc_z real 4 pix POS_CCD_Y Row center

rowcErr_u real 4 pix POS_CCD_Y ERROR Row center error

rowcErr_g real 4 pix POS_CCD_Y ERROR Row center error

rowcErr_r real 4 pix POS_CCD_Y ERROR Row center error

rowcErr_i real 4 pix POS_CCD_Y ERROR Row center error

rowcErr_z real 4 pix POS_CCD_Y ERROR Row center error

colc_u real 4 pix POS_CCD_X Column center

colc_g real 4 pix POS_CCD_X Column center

colc_r real 4 pix POS_CCD_X Column center

colc_i real 4 pix POS_CCD_X Column center

colc_z real 4 pix POS_CCD_X Column center

colcErr_u real 4 pix POS_CCD_X ERROR Column center error

colcErr_g real 4 pix POS_CCD_X ERROR Column center error

colcErr_r real 4 pix POS_CCD_X ERROR Column center error

colcErr_i real 4 pix POS_CCD_X ERROR Column center error

colcErr_z real 4 pix POS_CCD_X ERROR Column center error

sky_u real 4 maggies/arcsec^2 INST_SKY_LEVEL Sky flux at the center of object (allowing for siblings if blended).

sky_g real 4 maggies/arcsec^2 INST_SKY_LEVEL Sky flux at the center of object (allowing for siblings if blended).

sky_r real 4 maggies/arcsec^2 INST_SKY_LEVEL Sky flux at the center of object (allowing for siblings if blended).

sky_i real 4 maggies/arcsec^2 INST_SKY_LEVEL Sky flux at the center of object (allowing for siblings if blended).

sky_z real 4 maggies/arcsec^2 INST_SKY_LEVEL Sky flux at the center of object (allowing for siblings if blended).

skyErr_u real 4 maggies/arcsec^2 INST_SKY_LEVEL ERROR Sky flux error

skyErr_g real 4 maggies/arcsec^2 INST_SKY_LEVEL ERROR Sky flux error

skyErr_r real 4 maggies/arcsec^2 INST_SKY_LEVEL ERROR Sky flux error

skyErr_i real 4 maggies/arcsec^2 INST_SKY_LEVEL ERROR Sky flux error

skyErr_z real 4 maggies/arcsec^2 INST_SKY_LEVEL ERROR Sky flux error

psfMag_u real 4 mag PHOT_SDSS_U PSF flux

psfMag_g real 4 mag PHOT_SDSS_G PSF flux

psfMag_r real 4 mag PHOT_SDSS_R PSF flux

psfMag_i real 4 mag PHOT_SDSS_I PSF flux

psfMag_z real 4 mag PHOT_SDSS_Z PSF flux

psfMagErr_u real 4 mag PHOT_SDSS_U ERROR PSF flux error

psfMagErr_g real 4 mag PHOT_SDSS_G ERROR PSF flux error

psfMagErr_r real 4 mag PHOT_SDSS_R ERROR PSF flux error

psfMagErr_i real 4 mag PHOT_SDSS_I ERROR PSF flux error

psfMagErr_z real 4 mag PHOT_SDSS_Z ERROR PSF flux error

fiberMag_u real 4 mag PHOT_SDSS_U Flux in 3 arcsec diameter fiber radius

fiberMag_g real 4 mag PHOT_SDSS_G Flux in 3 arcsec diameter fiber radius

fiberMag_r real 4 mag PHOT_SDSS_R Flux in 3 arcsec diameter fiber radius

fiberMag_i real 4 mag PHOT_SDSS_I Flux in 3 arcsec diameter fiber radius

fiberMag_z real 4 mag PHOT_SDSS_Z Flux in 3 arcsec diameter fiber radius

fiberMagErr_u real 4 mag PHOT_SDSS_U ERROR Flux in 3 arcsec diameter fiber radius error

fiberMagErr_g real 4 mag PHOT_SDSS_G ERROR Flux in 3 arcsec diameter fiber radius error

fiberMagErr_r real 4 mag PHOT_SDSS_R ERROR Flux in 3 arcsec diameter fiber radius error

fiberMagErr_i real 4 mag PHOT_SDSS_I ERROR Flux in 3 arcsec diameter fiber radius error

fiberMagErr_z real 4 mag PHOT_SDSS_Z ERROR Flux in 3 arcsec diameter fiber radius error

petroMag_u real 4 mag PHOT_SDSS_U Petrosian flux

petroMag_g real 4 mag PHOT_SDSS_G Petrosian flux

petroMag_r real 4 mag PHOT_SDSS_R Petrosian flux

petroMag_i real 4 mag PHOT_SDSS_I Petrosian flux

petroMag_z real 4 mag PHOT_SDSS_Z Petrosian flux

petroMagErr_u real 4 mag PHOT_SDSS_U ERROR Petrosian flux error

petroMagErr_g real 4 mag PHOT_SDSS_G ERROR Petrosian flux error

petroMagErr_r real 4 mag PHOT_SDSS_R ERROR Petrosian flux error

petroMagErr_i real 4 mag PHOT_SDSS_I ERROR Petrosian flux error

petroMagErr_z real 4 mag PHOT_SDSS_Z ERROR Petrosian flux error

petroRad_u real 4 arcsec EXTENSION_RAD Petrosian radius

petroRad_g real 4 arcsec EXTENSION_RAD Petrosian radius

petroRad_r real 4 arcsec EXTENSION_RAD Petrosian radius

petroRad_i real 4 arcsec EXTENSION_RAD Petrosian radius

petroRad_z real 4 arcsec EXTENSION_RAD Petrosian radius

petroRadErr_u real 4 arcsec EXTENSION_RAD ERROR Petrosian radius error

petroRadErr_g real 4 arcsec EXTENSION_RAD ERROR Petrosian radius error

petroRadErr_r real 4 arcsec EXTENSION_RAD ERROR Petrosian radius error

petroRadErr_i real 4 arcsec EXTENSION_RAD ERROR Petrosian radius error

petroRadErr_z real 4 arcsec EXTENSION_RAD ERROR Petrosian radius error

petroR50_u real 4 arcsec EXTENSION_RAD Radius containing 50% of Petrosian flux

petroR50_g real 4 arcsec EXTENSION_RAD Radius containing 50% of Petrosian flux

petroR50_r real 4 arcsec EXTENSION_RAD Radius containing 50% of Petrosian flux

petroR50_i real 4 arcsec EXTENSION_RAD Radius containing 50% of Petrosian flux

petroR50_z real 4 arcsec EXTENSION_RAD Radius containing 50% of Petrosian flux

petroR50Err_u real 4 arcsec EXTENSION_RAD ERROR Error in radius with 50% of Petrosian flux error

petroR50Err_g real 4 arcsec EXTENSION_RAD ERROR Error in radius with 50% of Petrosian flux error

petroR50Err_r real 4 arcsec EXTENSION_RAD ERROR Error in radius with 50% of Petrosian flux error

petroR50Err_i real 4 arcsec EXTENSION_RAD ERROR Error in radius with 50% of Petrosian flux error

petroR50Err_z real 4 arcsec EXTENSION_RAD ERROR Error in radius with 50% of Petrosian flux error

petroR90_u real 4 arcsec EXTENSION_RAD Radius containing 90% of Petrosian flux

petroR90_g real 4 arcsec EXTENSION_RAD Radius containing 90% of Petrosian flux

petroR90_r real 4 arcsec EXTENSION_RAD Radius containing 90% of Petrosian flux

petroR90_i real 4 arcsec EXTENSION_RAD Radius containing 90% of Petrosian flux

petroR90_z real 4 arcsec EXTENSION_RAD Radius containing 90% of Petrosian flux

petroR90Err_u real 4 arcsec EXTENSION_RAD ERROR Error in radius with 90% of Petrosian flux error

petroR90Err_g real 4 arcsec EXTENSION_RAD ERROR Error in radius with 90% of Petrosian flux error

petroR90Err_r real 4 arcsec EXTENSION_RAD ERROR Error in radius with 90% of Petrosian flux error

petroR90Err_i real 4 arcsec EXTENSION_RAD ERROR Error in radius with 90% of Petrosian flux error

petroR90Err_z real 4 arcsec EXTENSION_RAD ERROR Error in radius with 90% of Petrosian flux error

q_u real 4 FIT_PARAM Stokes Q parameter

q_g real 4 FIT_PARAM Stokes Q parameter

q_r real 4 FIT_PARAM Stokes Q parameter

q_i real 4 FIT_PARAM Stokes Q parameter

q_z real 4 FIT_PARAM Stokes Q parameter

qErr_u real 4 FIT_PARAM ERROR Stokes Q parameter error

qErr_g real 4 FIT_PARAM ERROR Stokes Q parameter error

qErr_r real 4 FIT_PARAM ERROR Stokes Q parameter error

qErr_i real 4 FIT_PARAM ERROR Stokes Q parameter error

qErr_z real 4 FIT_PARAM ERROR Stokes Q parameter error

u_u real 4 FIT_PARAM Stokes U parameter

u_g real 4 FIT_PARAM Stokes U parameter

u_r real 4 FIT_PARAM Stokes U parameter

u_i real 4 FIT_PARAM Stokes U parameter

u_z real 4 FIT_PARAM Stokes U parameter

uErr_u real 4 FIT_PARAM ERROR Stokes U parameter error

uErr_g real 4 FIT_PARAM ERROR Stokes U parameter error

uErr_r real 4 FIT_PARAM ERROR Stokes U parameter error

uErr_i real 4 FIT_PARAM ERROR Stokes U parameter error

uErr_z real 4 FIT_PARAM ERROR Stokes U parameter error

mE1_u real 4 FIT_PARAM Adaptive E1 shape measure

mE1_g real 4 FIT_PARAM Adaptive E1 shape measure

mE1_r real 4 FIT_PARAM Adaptive E1 shape measure

mE1_i real 4 FIT_PARAM Adaptive E1 shape measure

mE1_z real 4 FIT_PARAM Adaptive E1 shape measure

mE2_u real 4 FIT_PARAM Adaptive E2 shape measure

mE2_g real 4 FIT_PARAM Adaptive E2 shape measure

mE2_r real 4 FIT_PARAM Adaptive E2 shape measure

mE2_i real 4 FIT_PARAM Adaptive E2 shape measure

mE2_z real 4 FIT_PARAM Adaptive E2 shape measure

mE1E1Err_u real 4 FIT_PARAM ERROR Covariance in E1/E1 shape measure

mE1E1Err_g real 4 FIT_PARAM ERROR Covariance in E1/E1 shape measure

mE1E1Err_r real 4 FIT_PARAM ERROR Covariance in E1/E1 shape measure

mE1E1Err_i real 4 FIT_PARAM ERROR Covariance in E1/E1 shape measure

mE1E1Err_z real 4 FIT_PARAM ERROR Covariance in E1/E1 shape measure

mE1E2Err_u real 4 FIT_PARAM ERROR Covariance in E1/E2 shape measure

mE1E2Err_g real 4 FIT_PARAM ERROR Covariance in E1/E2 shape measure

mE1E2Err_r real 4 FIT_PARAM ERROR Covariance in E1/E2 shape measure

mE1E2Err_i real 4 FIT_PARAM ERROR Covariance in E1/E2 shape measure

mE1E2Err_z real 4 FIT_PARAM ERROR Covariance in E1/E2 shape measure

mE2E2Err_u real 4 FIT_PARAM ERROR Covariance in E2/E2 shape measure

mE2E2Err_g real 4 FIT_PARAM ERROR Covariance in E2/E2 shape measure

mE2E2Err_r real 4 FIT_PARAM ERROR Covariance in E2/E2 shape measure

mE2E2Err_i real 4 FIT_PARAM ERROR Covariance in E2/E2 shape measure

mE2E2Err_z real 4 FIT_PARAM ERROR Covariance in E2/E2 shape measure

mRrCc_u real 4 FIT_PARAM Adaptive ( + )

mRrCc_g real 4 FIT_PARAM Adaptive ( + )

mRrCc_r real 4 FIT_PARAM Adaptive ( + )

mRrCc_i real 4 FIT_PARAM Adaptive ( + )

mRrCc_z real 4 FIT_PARAM Adaptive ( + )

mRrCcErr_u real 4 FIT_PARAM ERROR Error in adaptive ( + )

mRrCcErr_g real 4 FIT_PARAM ERROR Error in adaptive ( + )

mRrCcErr_r real 4 FIT_PARAM ERROR Error in adaptive ( + )

mRrCcErr_i real 4 FIT_PARAM ERROR Error in adaptive ( + )

mRrCcErr_z real 4 FIT_PARAM ERROR Error in adaptive ( + )

mCr4_u real 4 FIT_PARAM Adaptive fourth moment of object

mCr4_g real 4 FIT_PARAM Adaptive fourth moment of object

mCr4_r real 4 FIT_PARAM Adaptive fourth moment of object

mCr4_i real 4 FIT_PARAM Adaptive fourth moment of object

mCr4_z real 4 FIT_PARAM Adaptive fourth moment of object

mE1PSF_u real 4 FIT_PARAM Adaptive E1 for PSF

mE1PSF_g real 4 FIT_PARAM Adaptive E1 for PSF

mE1PSF_r real 4 FIT_PARAM Adaptive E1 for PSF

mE1PSF_i real 4 FIT_PARAM Adaptive E1 for PSF

mE1PSF_z real 4 FIT_PARAM Adaptive E1 for PSF

mE2PSF_u real 4 FIT_PARAM Adaptive E2 for PSF

mE2PSF_g real 4 FIT_PARAM Adaptive E2 for PSF

mE2PSF_r real 4 FIT_PARAM Adaptive E2 for PSF

mE2PSF_i real 4 FIT_PARAM Adaptive E2 for PSF

mE2PSF_z real 4 FIT_PARAM Adaptive E2 for PSF

mRrCcPSF_u real 4 FIT_PARAM Adaptive ( + ) for PSF

mRrCcPSF_g real 4 FIT_PARAM Adaptive ( + ) for PSF

mRrCcPSF_r real 4 FIT_PARAM Adaptive ( + ) for PSF

mRrCcPSF_i real 4 FIT_PARAM Adaptive ( + ) for PSF

mRrCcPSF_z real 4 FIT_PARAM Adaptive ( + ) for PSF

mCr4PSF_u real 4 FIT_PARAM Adaptive fourth moment for PSF

mCr4PSF_g real 4 FIT_PARAM Adaptive fourth moment for PSF

mCr4PSF_r real 4 FIT_PARAM Adaptive fourth moment for PSF

mCr4PSF_i real 4 FIT_PARAM Adaptive fourth moment for PSF

mCr4PSF_z real 4 FIT_PARAM Adaptive fourth moment for PSF

isoRowc_u real 4 pix FIT_PARAM Isophotal row centroid

isoRowc_g real 4 pix FIT_PARAM Isophotal row centroid

isoRowc_r real 4 pix FIT_PARAM Isophotal row centroid

isoRowc_i real 4 pix FIT_PARAM Isophotal row centroid

isoRowc_z real 4 pix FIT_PARAM Isophotal row centroid

isoRowcErr_u real 4 pix FIT_PARAM Isophotal row centroid error. PLACEHOLDER, set to -9999 or -1000

isoRowcErr_g real 4 pix FIT_PARAM Isophotal row centroid error. PLACEHOLDER, set to -9999 or -1000

isoRowcErr_r real 4 pix FIT_PARAM Isophotal row centroid error. PLACEHOLDER, set to -9999 or -1000

isoRowcErr_i real 4 pix FIT_PARAM Isophotal row centroid error. PLACEHOLDER, set to -9999 or -1000

isoRowcErr_z real 4 pix FIT_PARAM Isophotal row centroid error. PLACEHOLDER, set to -9999 or -1000

isoRowcGrad_u real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in row centroid with isophote

isoRowcGrad_g real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in row centroid with isophote

isoRowcGrad_r real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in row centroid with isophote

isoRowcGrad_i real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in row centroid with isophote

isoRowcGrad_z real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in row centroid with isophote

isoColc_u real 4 pix FIT_PARAM Isophotal column centroid

isoColc_g real 4 pix FIT_PARAM Isophotal column centroid

isoColc_r real 4 pix FIT_PARAM Isophotal column centroid

isoColc_i real 4 pix FIT_PARAM Isophotal column centroid

isoColc_z real 4 pix FIT_PARAM Isophotal column centroid

isoColcErr_u real 4 pix FIT_PARAM Isophotal column centroid error. PLACEHOLDER, set to -9999 or -1000

isoColcErr_g real 4 pix FIT_PARAM Isophotal column centroid error. PLACEHOLDER, set to -9999 or -1000

isoColcErr_r real 4 pix FIT_PARAM Isophotal column centroid error. PLACEHOLDER, set to -9999 or -1000

isoColcErr_i real 4 pix FIT_PARAM Isophotal column centroid error. PLACEHOLDER, set to -9999 or -1000

isoColcErr_z real 4 pix FIT_PARAM Isophotal column centroid error. PLACEHOLDER, set to -9999 or -1000

isoColcGrad_u real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in column centroid with isophote

isoColcGrad_g real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in column centroid with isophote

isoColcGrad_r real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in column centroid with isophote

isoColcGrad_i real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in column centroid with isophote

isoColcGrad_z real 4 pix/(mag/arcsec^2) FIT_PARAM Gradient in column centroid with isophote

isoA_u real 4 pix EXTENSION_RAD Isophotal major axis

isoA_g real 4 pix EXTENSION_RAD Isophotal major axis

isoA_r real 4 pix EXTENSION_RAD Isophotal major axis

isoA_i real 4 pix EXTENSION_RAD Isophotal major axis

isoA_z real 4 pix EXTENSION_RAD Isophotal major axis

isoAErr_u real 4 pix EXTENSION_RAD ERROR Isophotal major axis error. PLACEHOLDER, set to -9999 or -1000

isoAErr_g real 4 pix EXTENSION_RAD ERROR Isophotal major axis error. PLACEHOLDER, set to -9999 or -1000

isoAErr_r real 4 pix EXTENSION_RAD ERROR Isophotal major axis error. PLACEHOLDER, set to -9999 or -1000

isoAErr_i real 4 pix EXTENSION_RAD ERROR Isophotal major axis error. PLACEHOLDER, set to -9999 or -1000

isoAErr_z real 4 pix EXTENSION_RAD ERROR Isophotal major axis error. PLACEHOLDER, set to -9999 or -1000

isoB_u real 4 pix EXTENSION_SMIN Isophotal minor axis

isoB_g real 4 pix EXTENSION_SMIN Isophotal minor axis

isoB_r real 4 pix EXTENSION_SMIN Isophotal minor axis

isoB_i real 4 pix EXTENSION_SMIN Isophotal minor axis

isoB_z real 4 pix EXTENSION_SMIN Isophotal minor axis

isoBErr_u real 4 pix EXTENSION_SMIN ERROR Isophotal minor axis error. PLACEHOLDER, set to -9999 or -1000

isoBErr_g real 4 pix EXTENSION_SMIN ERROR Isophotal minor axis error. PLACEHOLDER, set to -9999 or -1000

isoBErr_r real 4 pix EXTENSION_SMIN ERROR Isophotal minor axis error. PLACEHOLDER, set to -9999 or -1000

isoBErr_i real 4 pix EXTENSION_SMIN ERROR Isophotal minor axis error. PLACEHOLDER, set to -9999 or -1000

isoBErr_z real 4 pix EXTENSION_SMIN ERROR Isophotal minor axis error. PLACEHOLDER, set to -9999 or -1000

isoAGrad_u real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in major axis at the isophote

isoAGrad_g real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in major axis at the isophote

isoAGrad_r real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in major axis at the isophote

isoAGrad_i real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in major axis at the isophote

isoAGrad_z real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in major axis at the isophote

isoBGrad_u real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in minor axis at the isophote

isoBGrad_g real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in minor axis at the isophote

isoBGrad_r real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in minor axis at the isophote

isoBGrad_i real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in minor axis at the isophote

isoBGrad_z real 4 arcsec/(mag/arcsec^2) FIT_PARAM Gradient in minor axis at the isophote

isoPhi_u real 4 deg FIT_PARAM Isophotal position angle (+N thru E)

isoPhi_g real 4 deg FIT_PARAM Isophotal position angle (+N thru E)

isoPhi_r real 4 deg FIT_PARAM Isophotal position angle (+N thru E)

isoPhi_i real 4 deg FIT_PARAM Isophotal position angle (+N thru E)

isoPhi_z real 4 deg FIT_PARAM Isophotal position angle (+N thru E)

isoPhiErr_u real 4 deg FIT_PARAM Isophotal position angle error. PLACEHOLDER, set to -9999 or -1000

isoPhiErr_g real 4 deg FIT_PARAM Isophotal position angle error. PLACEHOLDER, set to -9999 or -1000

isoPhiErr_r real 4 deg FIT_PARAM Isophotal position angle error. PLACEHOLDER, set to -9999 or -1000

isoPhiErr_i real 4 deg FIT_PARAM Isophotal position angle error. PLACEHOLDER, set to -9999 or -1000

isoPhiErr_z real 4 deg FIT_PARAM Isophotal position angle error. PLACEHOLDER, set to -9999 or -1000

isoPhiGrad_u real 4 deg/(mag/arcsec^2) FIT_PARAM Gradient in positional angle with isophote

isoPhiGrad_g real 4 deg/(mag/arcsec^2) FIT_PARAM Gradient in positional angle with isophote

isoPhiGrad_r real 4 deg/(mag/arcsec^2) FIT_PARAM Gradient in positional angle with isophote

isoPhiGrad_i real 4 deg/(mag/arcsec^2) FIT_PARAM Gradient in positional angle with isophote

isoPhiGrad_z real 4 deg/(mag/arcsec^2) FIT_PARAM Gradient in positional angle with isophote

deVRad_u real 4 arcsec EXTENSION_RAD FIT_PARAM DeVaucouleurs fit scale radius

deVRad_g real 4 arcsec EXTENSION_RAD FIT_PARAM DeVaucouleurs fit scale radius

deVRad_r real 4 arcsec EXTENSION_RAD FIT_PARAM DeVaucouleurs fit scale radius

deVRad_i real 4 arcsec EXTENSION_RAD FIT_PARAM DeVaucouleurs fit scale radius

deVRad_z real 4 arcsec EXTENSION_RAD FIT_PARAM DeVaucouleurs fit scale radius

deVRadErr_u real 4 arcsec EXTENSION_RAD ERROR DeVaucouleurs fit scale radius error

deVRadErr_g real 4 arcsec EXTENSION_RAD ERROR DeVaucouleurs fit scale radius error

deVRadErr_r real 4 arcsec EXTENSION_RAD ERROR DeVaucouleurs fit scale radius error

deVRadErr_i real 4 arcsec EXTENSION_RAD ERROR DeVaucouleurs fit scale radius error

deVRadErr_z real 4 arcsec EXTENSION_RAD ERROR DeVaucouleurs fit scale radius error

deVAB_u real 4 FIT_PARAM DeVaucouleurs fit a/b

deVAB_g real 4 FIT_PARAM DeVaucouleurs fit a/b

deVAB_r real 4 FIT_PARAM DeVaucouleurs fit a/b

deVAB_i real 4 FIT_PARAM DeVaucouleurs fit a/b

deVAB_z real 4 FIT_PARAM DeVaucouleurs fit a/b

deVABErr_u real 4 FIT_PARAM ERROR DeVaucouleurs fit a/b error

deVABErr_g real 4 FIT_PARAM ERROR DeVaucouleurs fit a/b error

deVABErr_r real 4 FIT_PARAM ERROR DeVaucouleurs fit a/b error

deVABErr_i real 4 FIT_PARAM ERROR DeVaucouleurs fit a/b error

deVABErr_z real 4 FIT_PARAM ERROR DeVaucouleurs fit a/b error

deVPhi_u real 4 deg FIT_PARAM POS_ANG_GENERAL DeVaucouleurs fit position angle (+N thru E)

deVPhi_g real 4 deg FIT_PARAM POS_ANG_GENERAL DeVaucouleurs fit position angle (+N thru E)

deVPhi_r real 4 deg FIT_PARAM POS_ANG_GENERAL DeVaucouleurs fit position angle (+N thru E)

deVPhi_i real 4 deg FIT_PARAM POS_ANG_GENERAL DeVaucouleurs fit position angle (+N thru E)

deVPhi_z real 4 deg FIT_PARAM POS_ANG_GENERAL DeVaucouleurs fit position angle (+N thru E)

deVPhiErr_u real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR DeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000

deVPhiErr_g real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR DeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000

deVPhiErr_r real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR DeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000

deVPhiErr_i real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR DeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000

deVPhiErr_z real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR DeVaucouleurs fit position angle error. PLACEHOLDER, set to -9999 or -1000

deVMag_u real 4 mag PHOT_SDSS_U FIT_PARAM DeVaucouleurs magnitude fit

deVMag_g real 4 mag PHOT_SDSS_G FIT_PARAM DeVaucouleurs magnitude fit

deVMag_r real 4 mag PHOT_SDSS_R FIT_PARAM DeVaucouleurs magnitude fit

deVMag_i real 4 mag PHOT_SDSS_I FIT_PARAM DeVaucouleurs magnitude fit

deVMag_z real 4 mag PHOT_SDSS_Z FIT_PARAM DeVaucouleurs magnitude fit

deVMagErr_u real 4 mag PHOT_SDSS_U ERROR FIT_PARAM DeVaucouleurs magnitude fit error

deVMagErr_g real 4 mag PHOT_SDSS_G ERROR FIT_PARAM DeVaucouleurs magnitude fit error

deVMagErr_r real 4 mag PHOT_SDSS_R ERROR FIT_PARAM DeVaucouleurs magnitude fit error

deVMagErr_i real 4 mag PHOT_SDSS_I ERROR FIT_PARAM DeVaucouleurs magnitude fit error

deVMagErr_z real 4 mag PHOT_SDSS_Z ERROR FIT_PARAM DeVaucouleurs magnitude fit error

expRad_u real 4 arcsec EXTENSION_RAD FIT_PARAM Exponetial fit scale radius

expRad_g real 4 arcsec EXTENSION_RAD FIT_PARAM Exponetial fit scale radius

expRad_r real 4 arcsec EXTENSION_RAD FIT_PARAM Exponetial fit scale radius

expRad_i real 4 arcsec EXTENSION_RAD FIT_PARAM Exponetial fit scale radius

expRad_z real 4 arcsec EXTENSION_RAD FIT_PARAM Exponetial fit scale radius

expRadErr_u real 4 arcsec EXTENSION_RAD ERROR Exponetial fit scale radius error

expRadErr_g real 4 arcsec EXTENSION_RAD ERROR Exponetial fit scale radius error

expRadErr_r real 4 arcsec EXTENSION_RAD ERROR Exponetial fit scale radius error

expRadErr_i real 4 arcsec EXTENSION_RAD ERROR Exponetial fit scale radius error

expRadErr_z real 4 arcsec EXTENSION_RAD ERROR Exponetial fit scale radius error

expAB_u real 4 FIT_PARAM Exponential fit a/b

expAB_g real 4 FIT_PARAM Exponential fit a/b

expAB_r real 4 FIT_PARAM Exponential fit a/b

expAB_i real 4 FIT_PARAM Exponential fit a/b

expAB_z real 4 FIT_PARAM Exponential fit a/b

expABErr_u real 4 FIT_PARAM Exponential fit a/b

expABErr_g real 4 FIT_PARAM Exponential fit a/b

expABErr_r real 4 FIT_PARAM Exponential fit a/b

expABErr_i real 4 FIT_PARAM Exponential fit a/b

expABErr_z real 4 FIT_PARAM Exponential fit a/b

expPhi_u real 4 deg FIT_PARAM POS_ANG_GENERAL Exponential fit position angle (+N thru E)

expPhi_g real 4 deg FIT_PARAM POS_ANG_GENERAL Exponential fit position angle (+N thru E)

expPhi_r real 4 deg FIT_PARAM POS_ANG_GENERAL Exponential fit position angle (+N thru E)

expPhi_i real 4 deg FIT_PARAM POS_ANG_GENERAL Exponential fit position angle (+N thru E)

expPhi_z real 4 deg FIT_PARAM POS_ANG_GENERAL Exponential fit position angle (+N thru E)

expPhiErr_u real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR Exponential fit position angle error. PLACEHOLDER, set to -9999 or -1000

expPhiErr_g real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR Exponential fit position angle error. PLACEHOLDER, set to -9999 or -1000

expPhiErr_r real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR Exponential fit position angle error. PLACEHOLDER, set to -9999 or -1000

expPhiErr_i real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR Exponential fit position angle error. PLACEHOLDER, set to -9999 or -1000

expPhiErr_z real 4 deg FIT_PARAM POS_ANG_GENERAL ERROR Exponential fit position angle error. PLACEHOLDER, set to -9999 or -1000

expMag_u real 4 mag PHOT_SDSS_U Exponential fit

expMag_g real 4 mag PHOT_SDSS_G Exponential fit

expMag_r real 4 mag PHOT_SDSS_R Exponential fit

expMag_i real 4 mag PHOT_SDSS_I Exponential fit

expMag_z real 4 mag PHOT_SDSS_Z Exponential fit

expMagErr_u real 4 mag PHOT_SDSS_U ERROR Exponential fit error

expMagErr_g real 4 mag PHOT_SDSS_G ERROR Exponential fit error

expMagErr_r real 4 mag PHOT_SDSS_R ERROR Exponential fit error

expMagErr_i real 4 mag PHOT_SDSS_I ERROR Exponential fit error

expMagErr_z real 4 mag PHOT_SDSS_Z ERROR Exponential fit error

modelMag_u real 4 mag PHOT_SDSS_U FIT_PARAM better of DeV/Exp magnitude fit

modelMag_g real 4 mag PHOT_SDSS_G FIT_PARAM better of DeV/Exp magnitude fit

modelMag_r real 4 mag PHOT_SDSS_R FIT_PARAM better of DeV/Exp magnitude fit

modelMag_i real 4 mag PHOT_SDSS_I FIT_PARAM better of DeV/Exp magnitude fit

modelMag_z real 4 mag PHOT_SDSS_Z FIT_PARAM better of DeV/Exp magnitude fit

modelMagErr_u real 4 mag PHOT_SDSS_U ERROR better of DeV/Exp magnitude fit error

modelMagErr_g real 4 mag PHOT_SDSS_G ERROR better of DeV/Exp magnitude fit error

modelMagErr_r real 4 mag PHOT_SDSS_R ERROR better of DeV/Exp magnitude fit error

modelMagErr_i real 4 mag PHOT_SDSS_I ERROR better of DeV/Exp magnitude fit error

modelMagErr_z real 4 mag PHOT_SDSS_Z ERROR better of DeV/Exp magnitude fit error

texture_u real 4 FIT_PARAM Texture parameter

texture_g real 4 FIT_PARAM Texture parameter

texture_r real 4 FIT_PARAM Texture parameter

texture_i real 4 FIT_PARAM Texture parameter

texture_z real 4 FIT_PARAM Texture parameter

lnLStar_u real 4 FIT_GOODNESS Star ln(likelihood)

lnLStar_g real 4 FIT_GOODNESS Star ln(likelihood)

lnLStar_r real 4 FIT_GOODNESS Star ln(likelihood)

lnLStar_i real 4 FIT_GOODNESS Star ln(likelihood)

lnLStar_z real 4 FIT_GOODNESS Star ln(likelihood)

lnLExp_u real 4 FIT_GOODNESS Exponential disk fit ln(likelihood)

lnLExp_g real 4 FIT_GOODNESS Exponential disk fit ln(likelihood)

lnLExp_r real 4 FIT_GOODNESS Exponential disk fit ln(likelihood)

lnLExp_i real 4 FIT_GOODNESS Exponential disk fit ln(likelihood)

lnLExp_z real 4 FIT_GOODNESS Exponential disk fit ln(likelihood)

lnLDeV_u real 4 FIT_GOODNESS DeVaucouleurs fit ln(likelihood)

lnLDeV_g real 4 FIT_GOODNESS DeVaucouleurs fit ln(likelihood)

lnLDeV_r real 4 FIT_GOODNESS DeVaucouleurs fit ln(likelihood)

lnLDeV_i real 4 FIT_GOODNESS DeVaucouleurs fit ln(likelihood)

lnLDeV_z real 4 FIT_GOODNESS DeVaucouleurs fit ln(likelihood)

fracDeV_u real 4 PHOT_FLUX_RATIO Weight of deV component in best composite model

fracDeV_g real 4 PHOT_FLUX_RATIO Weight of deV component in best composite model

fracDeV_r real 4 PHOT_FLUX_RATIO Weight of deV component in best composite model

fracDeV_i real 4 PHOT_FLUX_RATIO Weight of deV component in best composite model

fracDeV_z real 4 PHOT_FLUX_RATIO Weight of deV component in best composite model

flags_u bigint 8 CODE_MISC Object detection flags per band

flags_g bigint 8 CODE_MISC Object detection flags per band

flags_r bigint 8 CODE_MISC Object detection flags per band

flags_i bigint 8 CODE_MISC Object detection flags per band

flags_z bigint 8 CODE_MISC Object detection flags per band

type_u int 4 CLASS_OBJECT Object type classification per band

type_g int 4 CLASS_OBJECT Object type classification per band

type_r int 4 CLASS_OBJECT Object type classification per band

type_i int 4 CLASS_OBJECT Object type classification per band

type_z int 4 CLASS_OBJECT Object type classification per band

probPSF_u real 4 STAT_PROBABILITY Probablity object is a star in each filter.

probPSF_g real 4 STAT_PROBABILITY Probablity object is a star in each filter.

probPSF_r real 4 STAT_PROBABILITY Probablity object is a star in each filter.

probPSF_i real 4 STAT_PROBABILITY Probablity object is a star in each filter.

probPSF_z real 4 STAT_PROBABILITY Probablity object is a star in each filter.

status int 4 CODE_MISC Status of the object in the survey

ra float 8 deg POS_EQ_RA_MAIN J2000 right ascension (r')

dec float 8 deg POS_EQ_DEC_MAIN J2000 declination (r')

cx float 8 POS_EQ_CART_X unit vector for ra+dec

cy float 8 POS_EQ_CART_Y unit vector for ra+dec

cz float 8 POS_EQ_CART_Z unit vector for ra+dec

raErr float 8 arcsec POS_EQ_RA_ERR Error in RA

decErr float 8 arcsec POS_EQ_DEC_ERR Error in dec

raDecCorr float 8 CODE_MISC RA/dec correlation

b float 8 deg POS_GAL_LON Galactic latitude

l float 8 deg POS_GAL_LAT Galactic longitude

offsetRa_u real 4 arcsec POS_OFFSET filter position ra minus final ra (* cos(dec))

offsetRa_g real 4 arcsec POS_OFFSET filter position ra minus final ra (* cos(dec))

offsetRa_r real 4 arcsec POS_OFFSET filter position ra minus final ra (* cos(dec))

offsetRa_i real 4 arcsec POS_OFFSET filter position ra minus final ra (* cos(dec))

offsetRa_z real 4 arcsec POS_OFFSET filter position ra minus final ra (* cos(dec))

offsetDec_u real 4 arcsec POS_OFFSET filter position dec minus final dec

offsetDec_g real 4 arcsec POS_OFFSET filter position dec minus final dec

offsetDec_r real 4 arcsec POS_OFFSET filter position dec minus final dec

offsetDec_i real 4 arcsec POS_OFFSET filter position dec minus final dec

offsetDec_z real 4 arcsec POS_OFFSET filter position dec minus final dec

primTarget int 4 CODE_MISC Bit mask of primary target categories the object was selected in.

secTarget int 4 CODE_MISC Bit mask of secondary target categories the object was selected in.

seguePrimTarget int 4 CODE_MISC Bit mask of SEGUE primary target categories the object was selected in.

segueSecTarget int 4 CODE_MISC Bit mask of SEGUE secondary target categories the object was selected in.

extinction_u real 4 mag PHOT_EXTINCTION_GAL Extinction in each filter

extinction_g real 4 mag PHOT_EXTINCTION_GAL Extinction in each filter

extinction_r real 4 mag PHOT_EXTINCTION_GAL Extinction in each filter

extinction_i real 4 mag PHOT_EXTINCTION_GAL Extinction in each filter

extinction_z real 4 mag PHOT_EXTINCTION_GAL Extinction in each filter

priority int 4 CODE_MISC Priority bits

rho real 4 mag EXTENSION_RAD Log size for surface brightness: 5xlog(Petro radius in i band)

nProf_u int 4 NUMBER Number of Profile Bins

nProf_g int 4 NUMBER Number of Profile Bins

nProf_r int 4 NUMBER Number of Profile Bins

nProf_i int 4 NUMBER Number of Profile Bins

nProf_z int 4 NUMBER Number of Profile Bins

loadVersion int 4 ID_VERSION Load Version

htmID bigint 8 CODE_HTM 20-deep hierarchical trangular mesh ID of this object

fieldID bigint 8 ID_FIELD Link to the field this object is in

parentID bigint 8 ID_PARENT Pointer to parent (if object deblended) or BRIGHT detection (if object has one), else 0

specObjID bigint 8 ID_CATALOG Pointer to the spectrum of object, if exists, else 0

u real 4 mag PHOT_SDSS_U FIT_PARAM Shorthand alias for modelMag

g real 4 mag PHOT_SDSS_G FIT_PARAM Shorthand alias for modelMag

r real 4 mag PHOT_SDSS_R FIT_PARAM Shorthand alias for modelMag

i real 4 mag PHOT_SDSS_I FIT_PARAM Shorthand alias for modelMag

z real 4 mag PHOT_SDSS_Z FIT_PARAM Shorthand alias for modelMag

err_u real 4 mag PHOT_SDSS_U ERROR Error in modelMag alias

err_g real 4 mag PHOT_SDSS_G ERROR Error in modelMag alias

err_r real 4 mag PHOT_SDSS_R ERROR Error in modelMag alias

err_i real 4 mag PHOT_SDSS_I ERROR Error in modelMag alias

err_z real 4 mag PHOT_SDSS_Z ERROR Error in modelMag alias

dered_u real 4 mag PHOT_SDSS_U Simplified mag, corrected for extinction: modelMag-extinction

dered_g real 4 mag PHOT_SDSS_G Simplified mag, corrected for extinction: modelMag-extinction

dered_r real 4 mag PHOT_SDSS_R Simplified mag, corrected for extinction: modelMag-extinction

dered_i real 4 mag PHOT_SDSS_I Simplified mag, corrected for extinction: modelMag-extinction

dered_z real 4 mag PHOT_SDSS_Z Simplified 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:

name value description

UNKNOWN 0 Spectrum not classifiable (zConf < 0.25).

STAR 1 Spectrum of a star.

GALAXY 2 Spectrum of a galaxy.

QSO 3 Spectrum of a quasi-stellar object.

HIZ_QSO 4 Spectrum 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).

SKY 5 Spectrum of blank sky.

STAR_LATE 6 Star dominated bt molecular bands M or later.

GAL_EM 7 Emission 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:

name value description

TARGET_QSO_HIZ 0x00000001

TARGET_QSO_CAP 0x00000002

TARGET_QSO_SKIRT 0x00000004

TARGET_QSO_FIRST_CAP 0x00000008

TARGET_QSO_FIRST_SKIRT 0x00000010

TARGET_GALAXY_RED 0x00000020

TARGET_GALAXY 0x00000040

TARGET_GALAXY_BIG 0x00000080

TARGET_GALAXY_BRIGHT_CORE 0x00000100

TARGET_ROSAT_A 0x00000200

TARGET_ROSAT_B 0x00000400

TARGET_ROSAT_C 0x00000800

TARGET_ROSAT_D 0x00001000

TARGET_STAR_BHB 0x00002000

TARGET_STAR_CARBON 0x00004000

TARGET_STAR_BROWN_DWARF 0x00008000

TARGET_STAR_SUB_DWARF 0x00010000

TARGET_STAR_CATY_VAR 0x00020000

TARGET_STAR_RED_DWARF 0x00040000

TARGET_STAR_WHITE_DWARF 0x00080000

TARGET_SERENDIP_BLUE 0x00100000

TARGET_SERENDIP_FIRST 0x00200000

TARGET_SERENDIP_RED 0x00400000

TARGET_SERENDIP_DISTANT 0x00800000

TARGET_SERENDIP_MANUAL 0x01000000

TARGET_QSO_FAINT 0x02000000

TARGET_GALAXY_RED_II 0x04000000

TARGET_ROSAT_E 0x08000000

TARGET_STAR_PN 0x10000000

TARGET_QSO_REJECT 0x20000000

Sectarget

The secTarget field is a bit mask specifying which primary target categories the object was selected in. The bits are defined as:

name value description

TARGET_LIGHT_TRAP 0x00000001

TARGET_REDDEN_STD 0x00000002

TARGET_TEST_TARGET 0x00000004

TARGET_QA 0x00000008

TARGET_SKY 0x00000010

TARGET_SPECTROPHOTO_STD 0x00000020

TARGET_GUIDE_STAR 0x00000040

TARGET_BUNDLE_HOLE 0x00000080

TARGET_QUALITY_HOLE 0x00000100

TARGET_HOT_STD 0x00000200

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:

Petrosian magnitudes and colors,
PSF magnitudes and colors, or
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:

name value description

CANONICAL_CENTER 0x0000000000000001 Measurements used the center in r*, rather than the locally determined center.

BRIGHT 0x0000000000000002 Object detected in first, bright object-finding; generally r*<17.5

EDGE 0x0000000000000004 Object is too close to edge of frame

BLENDED 0x0000000000000008 Object had multiple peaks detected within it; was thus a candidate to be a deblending parent.

CHILD 0x0000000000000010 Object is the product of an attempt to deblend a BLENDED object.

PEAKCENTER 0x0000000000000020 Given center is position of peak pixel, rather than based on the maximum-likelihood estimator.

NODEBLEND 0x0000000000000040 No deblending was attempted on this object, even though it is BLENDED.

NOPROFILE 0x0000000000000080 Object was too small or too close to the edge to estimate a radial profile.

NOPETRO 0x0000000000000100 No valid Petrosian radius was found for this object.

MANYPETRO 0x0000000000000200 More than one Petrosian radius was found.

NOPETRO_BIG

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Table of contents:

Parameters to Return

Spectroscopy Parameters

Imaging Parameters