SPARCL - SPARCL Field Catalog (SFC)

SPARCL Field Catalog

List of Fields available via Retrieve

CORE fields (common to all Data Sets)

Name Storage Units Description Default All
data_release CORE [Categorical] Data release of a given record (with a common data structure, e.g., SDSS-DR16, BOSS-DR16)
datasetgroup CORE [Categorical] Common name for a coherent set of spectra published as a single release (e.g., SDSS_BOSS)
dateobs CORE Range of observational dates for a given spectrum (single value for a single date)
dateobs_center CORE Central value of the dateobs range
dec CORE deg Declination in degrees
exptime CORE second Exposure time in seconds
extra_files CORE Additional files read for ingest
file CORE File used for this record
instrument CORE [Categorical] Instrument used for observation
ra CORE deg Right Ascension in degrees
redshift CORE Measured redshift, or radial velocity in units of redshift
redshift_err CORE Uncertainty on the measured redshift, or radial velocity in units of redshift
redshift_warning CORE Bitmask with warning on redshift result
site CORE [Categorical] Site of observations
sparcl_id CORE Universally Unique Identifier for spectrum in SPARCL
specid CORE Dataset-specific spectrum identifier (may not be unique)
specprimary CORE Whether an entry is the primary spectrum for a given target object
spectype CORE [Categorical] Spectral type of the object (STAR, GALAXY, QSO)
targetid CORE Dataset-specific photometric target identifier
telescope CORE [Categorical] Telescope used for the observation
updated CORE Date and time when the record was created/updated
wavemax CORE AA Maximum value of wavelength coverage in Angstroms
wavemin CORE AA Minimum value of wavelength coverage in Angstroms
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AUX and SPECTRA fields (unique to each Data Set)

Data Set: SDSS-DR16, AUX fields

Name Storage Units Description Default All
cx AUX x of Normal unit vector in J2000
theta AUX Template coefficients of best fit
zwarning_noqso AUX Warnings in z_noqso redshift (BOSS spectra only)
primtarget AUX Target selection information at plate design, primary science selection (for backwards compatibility)
cz AUX z of Normal unit vector in J2000
survey AUX Survey name
special_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II special program targets
eboss_target_id AUX EBOSS unique target identifier for every spectroscopic target
thing_id AUX Resolve THING_ID in SDSS imaging for best positional match
run1d AUX Spectroscopic 1D reduction (redshift and classification) name
targetobjid AUX Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
targettype AUX General type of target (SCIENCE, STANDARD, or SKY)
legacy_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey
spectrographid AUX Which spectrograph (1 or 2)
vdispz_err AUX Error in redshift associated with best-fit velocity dispersion
eboss_target1 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
chi68p AUX 68-th percentile value of abs(chi) of the best-fit synthetic spectrum to the actual spectrum (around 1.0 for a good fit)
segue2_target1 AUX Primary (science) target flags for SEGUE-2 targets
firstrelease AUX Name of first release this PLATE, MJD, FIBERID, RUN2D was associated with
eboss_target0 AUX SEQUELS, TDSS and SPIDERS target selection flags
fiberid AUX Fiber number

Data Set: SDSS-DR16, SPECTRA fields

Name Storage Units Description Default All
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
mask SPECTRA and_mask

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
snturnoff AUX Signal to noise measure for MS turnoff stars on plate (-9999 if not appropriate)
thing_id AUX Resolve THING_ID in SDSS imaging for best positional match
sn_median AUX Median signal-to-noise per pixel within each of the ugriz bandpasses
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
elodie_logg AUX log10(gravity) of ELODIE star
fiberid AUX Fiber number
spec2_r AUX Signal-to-noise squared for spectrograph #2, at r=20.25 for SDSS spectrograph spectra, r=20.20 for BOSS spectrograph spectra
vdisp_err AUX km s-1 Error in velocity dispersion
run2d AUX Spectroscopic 2D reduction (extraction of spectra) name
designid AUX Design identification number for plate
spec2_g AUX Signal-to-noise squared for spectrograph #2, at g=20.20 for SDSS spectrograph spectra, g=21.20 for BOSS spectrograph spectra
wcoverage AUX Coverage in wavelength, in units of log10 wavelength
fracnsigma AUX Fraction of pixels deviant by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
elodie_dof AUX Degrees of freedom in fit to best ELODIE star
specsegue1 AUX Set to 1 for primary SDSS SEGUE-1 program observation of object, 0 otherwise
special_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II special program targets
z_err_noqso AUX Error in Z_NOQSO redshift
spec1_r AUX Signal-to-noise squared for spectrograph #1, at r=20.25 for SDSS spectrograph spectra, r=20.20 for BOSS spectrograph spectra
nturnoff AUX Number of stars used for SNTURNOFF determination
elodie_z_modelerr AUX Standard deviation in Elodie redshift among the 12 best-fit stars
survey AUX Survey name

Data Set: BOSS-DR16, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA and_mask
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel

Data Set: DESI-DR1, AUX fields

Name Storage Units Description Default All
sv2_mws_target AUX MWS (bright time program) target selection bitmask for SV2
sv2_scnd_target AUX Secondary target selection bitmask for SV2
sv3_bgs_target AUX BGS (bright time program) target selection bitmask for SV3
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
sv3_mws_target AUX MWS (bright time program) target selection bitmask for SV3
sv3_scnd_target AUX Secondary target selection bitmask for SV3
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
tsnr2_bgs AUX BGS template (S/N)^2 summed over B,R,Z
tsnr2_elg AUX ELG template (S/N)^2 summed over B,R,Z
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
tsnr2_gpbbright AUX GPBBRIGHT template (S/N)^2 summed over B,R,Z
tsnr2_gpbdark AUX GPBDARK template (S/N)^2 summed over BRZ
tsnr2_lrg AUX LRG template (S/N)^2 summed over B,R,Z
tsnr2_lya AUX LYA template (S/N)^2 summed over B,R,Z
tsnr2_qso AUX QSO template (S/N)^2 summed over B,R,Z
zcat_nspec AUX Number of coadded spectra for this TARGETID in this zcatalog

Data Set: DESI-DR1, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA Mask value
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms

Data Set: DESI-EDR, AUX fields

Name Storage Units Description Default All
sv1_mws_target AUX MWS (bright time program) target selection bitmask for SV1
ref_epoch AUX year Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia
priority_init AUX Target initial priority from target selection bitmasks and OBSCONDITIONS
scnd_target AUX Target selection bitmask for secondary programs
fa_type AUX Fiberassign internal target type (science, standard, sky, safe, suppsky)
healpix AUX HEALPixel containing this location at NSIDE=64 in the NESTED scheme
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
pmra AUX mas year-1 Reference catalog proper motion in the RA direction
std_fiber_ra AUX arcsec Standard deviation (over exposures) of RA of actual fiber position
subpriority AUX Random subpriority [0-1] to break assignment ties
tsnr2_lya AUX LYA template (S/N)^2 summed over B,R,Z
plate_ra AUX deg Right Ascension to be used by PlateMaker
plate_dec AUX deg Declination to be used by PlateMaker
coadd_numexp AUX Number of exposures included in the coadd for this target
obsconditions AUX Bit-coded of allowed observing conditions
tsnr2_qso AUX QSO template (S/N)^2 summed over B,R,Z
pmdec AUX mas year-1 Reference catalog proper motion in the Dec direction
tsnr2_bgs AUX BGS template (S/N)^2 summed over B,R,Z
tsnr2_elg AUX ELG template (S/N)^2 summed over B,R,Z
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
sv2_mws_target AUX MWS (bright time program) target selection bitmask for SV2
std_fiber_dec AUX arcsec Standard deviation (over exposures) of DEC of actual fiber position
sv2_scnd_target AUX Secondary target selection bitmask for SV2
sv1_desi_target AUX DESI (dark time program) target selection bitmask for SV1
mean_psf_to_fiber_specflux AUX Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing

Data Set: DESI-EDR, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA Mask value
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms

Data Set: SDSS-DR17-test, AUX fields

Name Storage Units Description Default All
elodie_dof AUX Degrees of freedom in fit to best ELODIE star
elodie_feh AUX Metallicity [Fe/H] of ELODIE star
elodie_filename AUX File name for best-fit ELODIE star
elodie_logg AUX log10(gravity) of ELODIE star
elodie_object AUX Star name for ELODIE star
elodie_rchi2 AUX Reduced chi-squared of fit to best ELODIE star
elodie_sptype AUX ELODIE star spectral type
elodie_teff AUX Kelvin Effective temperature of ELODIE star
elodie_z AUX Redshift fit to ELODIE star
elodie_z_err AUX Error in redshift fit to ELODIE star
elodie_z_modelerr AUX Standard deviation in redshift among the 12 best-fit ELODIE stars
fiberid AUX Fiber number
firstrelease AUX Name of first release this PLATE, MJD, FIBERID, RUN2D was associated with
fluxobjid AUX Unique database ID of flux-based photometric match based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
fracnsighi AUX Fraction of pixels high by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
fracnsiglo AUX Fraction of pixels low by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
fracnsigma AUX Fraction of pixels deviant by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
lambda_eff AUX AA Effective wavelength drilling position was optimized for
legacy_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II Legacy survey
legacy_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey
marvels_target1 AUX Primary (science) target flags for MARVELS targets
marvels_target2 AUX Secondary (calibration) target flags for MARVELS targets
mjd AUX days Modified Julian Day of observation
npoly AUX Number of polynomial terms in fit
nspecobs AUX Number of spectroscopic observations of this source

Data Set: SDSS-DR17-test, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA and_mask
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
SPARCL Field Cat(alog)