List of Fields available via Retrieve
Name | Storage | Units | Description | Default | All |
---|---|---|---|---|---|
extra_files | CORE | — | Additional files read for ingest | ✘ | ✘ |
redshift_warning | CORE | — | Bitmask with warning on redshift result | ✘ | ✔ |
datasetgroup | CORE | — | [Categorical] Common name for a coherent set of spectra published as a single release (e.g., SDSS_BOSS) | ✘ | ✔ |
data_release | CORE | — | [Categorical] Data release of a given record (with a common data structure, e.g., SDSS-DR16, BOSS-DR16) | ✘ | ✔ |
instrument | CORE | — | [Categorical] Instrument used for observation | ✘ | ✔ |
site | CORE | — | [Categorical] Site of observations | ✘ | ✔ |
spectype | CORE | — | [Categorical] Spectral type of the object (STAR, GALAXY, QSO) | ✘ | ✔ |
telescope | CORE | — | [Categorical] Telescope used for the observation | ✘ | ✔ |
dateobs_center | CORE | — | Central value of the dateobs range | ✘ | ✔ |
targetid | CORE | — | Dataset-specific photometric target identifier | ✘ | ✔ |
specid | CORE | — | Dataset-specific spectrum identifier (may not be unique) | ✔ | ✔ |
updated | CORE | — | Date and time when the record was created/updated | ✘ | ✘ |
dec | CORE | deg | Declination in degrees | ✔ | ✔ |
exptime | CORE | second | Exposure time in seconds | ✘ | ✔ |
file | CORE | — | File used for this record | ✘ | ✘ |
wavemax | CORE | AA | Maximum value of wavelength coverage in Angstroms | ✘ | ✔ |
redshift | CORE | — | Measured redshift, or radial velocity in units of redshift | ✘ | ✔ |
wavemin | CORE | AA | Minimum value of wavelength coverage in Angstroms | ✘ | ✔ |
dateobs | CORE | — | Range of observational dates for a given spectrum (single value for a single date) | ✘ | ✔ |
ra | CORE | deg | Right Ascension in degrees | ✔ | ✔ |
redshift_err | CORE | — | Uncertainty on the measured redshift, or radial velocity in units of redshift | ✘ | ✔ |
sparcl_id | CORE | — | Universally Unique Identifier for spectrum in SPARCL | ✔ | ✔ |
specprimary | CORE | — | Whether an entry is the primary spectrum for a given target object | ✘ | ✔ |
.csv
Download .json
Name | Storage | Units | Description | Default | All |
---|---|---|---|---|---|
tfile | AUX | — | File that best fit template comes from in idlspec2d product | ✘ | ✔ |
theta | AUX | — | Template coefficients of best fit | ✘ | ✔ |
thing_id | AUX | — | Resolve THING_ID in SDSS imaging for best positional match | ✘ | ✔ |
thing_id_targeting | AUX | — | Resolve THING_ID in SDSS imaging for targeted object | ✘ | ✔ |
tile | AUX | — | Tile number (each tile can have several plates drilled for it) | ✘ | ✔ |
vdisp | AUX | km s-1 | Velocity dispersion | ✘ | ✔ |
vdispchi2 | AUX | — | Chi-squared for best-fit velocity dispersion | ✘ | ✔ |
vdispdof | AUX | — | Number of degrees of freedom in velocity dispersion fit | ✘ | ✔ |
vdisp_err | AUX | km s-1 | Error in velocity dispersion | ✘ | ✔ |
vdispnpix | AUX | — | Number of pixels overlapping the templates used in the velocity dispersion fit | ✘ | ✔ |
vdispz | AUX | — | Redshift associated with best-fit velocity dispersion | ✘ | ✔ |
vdispz_err | AUX | — | Error in redshift associated with best-fit velocity dispersion | ✘ | ✔ |
wcoverage | AUX | — | Coverage in wavelength, in units of log10 wavelength | ✘ | ✔ |
xfocal | AUX | mm | Hole position on plate (+X = +RA) | ✘ | ✔ |
yfocal | AUX | mm | Hole position on plate (+Y = +DEC) | ✘ | ✔ |
z_conf_person | AUX | — | Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence) | ✘ | ✔ |
z_err_noqso | AUX | — | Error in Z_NOQSO redshift | ✘ | ✔ |
z_noqso | AUX | — | Best redshift when ignoring QSO fits, recommended for BOSS CMASS and LOWZ targets; calculated only for survey=boss spectra, not for any SDSS spectrograph data | ✘ | ✔ |
zoffset | AUX | micron | Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan | ✘ | ✔ |
z_person | AUX | — | Visual-inspection redshift | ✘ | ✔ |
zwarning_noqso | AUX | — | Warnings in z_noqso redshift (BOSS spectra only); 0 means everything is OK | ✘ | ✔ |
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 | ✘ | ✔ |
Name | Storage | Units | Description | Default | All |
---|---|---|---|---|---|
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 | ✘ | ✔ |
zoffset | AUX | micron | Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan | ✘ | ✔ |
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 | ✘ | ✔ |
specboss | AUX | — | Set to 1 for primary BOSS spectrograph observation of object, 0 otherwise | ✘ | ✔ |
z_conf_person | AUX | — | Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence) | ✘ | ✔ |
programname | AUX | — | Program within each survey that the plate was part of | ✘ | ✔ |
marvels_target2 | AUX | — | Secondary (calibration) target flags for MARVELS targets | ✘ | ✔ |
yfocal | AUX | mm | Hole position on plate (+Y = +DEC) | ✘ | ✔ |
elodie_feh | AUX | — | Metallicity [Fe/H] of ELODIE star | ✘ | ✔ |
segue1_target1 | AUX | — | Primary (science) target flags for SEGUE-1 targets | ✘ | ✔ |
elodie_z_modelerr | AUX | — | Standard deviation in redshift among the 12 best-fit ELODIE stars | ✘ | ✔ |
cz | AUX | — | z of Normal unit vector in J2000 | ✘ | ✔ |
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 | ✘ | ✔ |
Name | Storage | Units | Description | Default | All |
---|---|---|---|---|---|
legacy_target2 | AUX | — | Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey | ✘ | ✔ |
special_target2 | AUX | — | Secondary (calibration) target flags for SDSS-I and SDSS-II special program targets | ✘ | ✔ |
segue2_target2 | AUX | — | Secondary (calibration) target flags for SEGUE-2 targets | ✘ | ✔ |
specboss | AUX | — | Set to 1 for primary BOSS spectrograph observation of object, 0 otherwise | ✘ | ✔ |
speclegacy | AUX | — | Set to 1 for primary SDSS Legacy program observation of object, 0 otherwise | ✘ | ✔ |
specsegue1 | AUX | — | Set to 1 for primary SDSS SEGUE-1 program observation of object, 0 otherwise | ✘ | ✔ |
specsegue2 | AUX | — | Set to 1 for primary SDSS SEGUE-2 program observation of object, 0 otherwise | ✘ | ✔ |
specsegue | AUX | — | Set to 1 for primary SDSS SEGUE program observation of object (including SEGUE-1 and SEGUE-2), 0 otherwise | ✘ | ✔ |
specsdss | AUX | — | Set to 1 for primary SDSS spectrograph observation of object, 0 otherwise | ✘ | ✔ |
bluefiber | AUX | — | Set to 1 if this hole was designated a blue fiber, 0 if designated a red fiber (high redshift LRGs are preferentially in red fibers) | ✘ | ✔ |
snturnoff | AUX | — | Signal to noise measure for MS turnoff stars on plate (-9999 if not appropriate) | ✘ | ✔ |
spec1_g | AUX | — | Signal-to-noise squared for spectrograph #1, at g=20.20 for SDSS spectrograph spectra, g=21.20 for BOSS spectrograph spectra | ✘ | ✔ |
spec1_i | AUX | — | Signal-to-noise squared for spectrograph #1, at i=19.90 for SDSS spectrograph spectra, i=20.20 for BOSS spectrograph spectra | ✘ | ✔ |
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 | ✘ | ✔ |
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 | ✘ | ✔ |
spec2_i | AUX | — | Signal-to-noise squared for spectrograph #2, at i=19.90 for SDSS spectrograph spectra, i=20.20 for BOSS spectrograph spectra | ✘ | ✔ |
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 | ✘ | ✔ |
spectroskyflux | AUX | nanomaggy | Sky flux in each of the ugriz imaging filters | ✘ | ✔ |
run1d | AUX | — | Spectroscopic 1D reduction (redshift and classification) name | ✘ | ✔ |
run2d | AUX | — | Spectroscopic 2D reduction (extraction of spectra) name | ✘ | ✔ |
class_noqso | AUX | — | Spectroscopic classification for Z_NOQSO redshift | ✘ | ✔ |
subclass_noqso | AUX | — | Spectroscopic subclassification for Z_NOQSO redshift | ✘ | ✔ |
spectroflux | AUX | nanomaggy | Spectrum projected onto ugriz filters | ✘ | ✔ |
elodie_z_modelerr | AUX | — | Standard deviation in redshift among the 12 best-fit ELODIE stars | ✘ | ✔ |
elodie_object | AUX | — | Star name for ELODIE star | ✘ | ✔ |
Name | Storage | Units | Description | Default | All |
---|---|---|---|---|---|
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 | ✘ | ✔ |
flux | SPECTRA | 1e-17 erg cm-2 s-1 AA-1 | Coadded calibrated flux | ✔ | ✔ |
wave_sigma | SPECTRA | pixel | Line-spread function width (sigma of approximating Gaussian) in units of number of pixel | ✘ | ✔ |
ivar | SPECTRA | 1e+34 cm4 s2 AA2 erg-2 | Inverse variance of flux | ✘ | ✔ |
wavelength | SPECTRA | AA | Wavelength in units of Angstroms | ✔ | ✔ |
mask | SPECTRA | — | and_mask | ✘ | ✔ |
Name | Storage | Units | Description | Default | All |
---|---|---|---|---|---|
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 | ✘ | ✔ |
Name | Storage | Units | Description | Default | All |
---|---|---|---|---|---|
model | SPECTRA | 1e-17 erg cm-2 s-1 AA-1 | Pipeline best model fit | ✘ | ✔ |
flux | SPECTRA | 1e-17 erg cm-2 s-1 AA-1 | Coadded calibrated flux | ✔ | ✔ |
wavelength | SPECTRA | AA | Wavelength in units of Angstroms | ✔ | ✔ |
mask | SPECTRA | — | Mask value | ✘ | ✔ |
ivar | SPECTRA | 1e+34 cm4 s2 AA2 erg-2 | Inverse variance of flux | ✘ | ✔ |
wave_sigma | SPECTRA | AA | Line-spread function width (sigma of approximating Gaussian) in units of Angstroms | ✘ | ✔ |