rave_dr5 (ravedr5.rave_dr5)
The table has 520563 rows, 197 columns.
Description
The page describes the columns and properties of the main table of RAVE DR5.
Change History:
13.07.2018: Constant_High_HRV_offset-DR5-RAVE_OBS_ID
Added list of RAVE_OBS_ID for stars with high velocities errors as correction for RAVDEDR5 table. These stars have a constant velocity offset of ~100km/s compared to GaiaDR2 owing to sky subtraction issues
22.08.2017: (V6.0)
updated wrong MJD_OBS for fields 20040110_0336m1, 20040110_0535m29, 20040110_0953m16, 20040111_0943m05
02.03.2017: (V5.0)
updated empty ID_HIPPARCOS column
07.02.2017: (V4.0)
removed erroneous entries for Mg_N/Mg (Mg_N <0) corrected unit from kpc to pc for distances/error in distances corrected erroneous negative errors for USNOB1 proper mountions (epm_RA,epm_DE)_USNOB1 generated by type error on crossmatching
25.11.2016: (V3.0)
removed data on spectral parameters for observations until 20040403. These were from a test run and remained erroneously in the file.
08.11.2016: (V2.0)
updated row numbers in RAVE_DR5 removed inconsistencies in cuts renamed cols for final version for DR5 paper
31.10.2016: (V1.0)
corrected columns Bmag_APASSDR9 and MatchFlag_APASSDR9 corrected column FitQuality_Binney: data type is float inserted values for CluStar_Flag and FootPrint_Flag
Attribution
Funding for Rave has been provided by:
- the Leibniz Institute for Astrophysics Potsdam (AIP);
- the Australian Astronomical Observatory;
- the Australian National University;
- the Australian Research Council;
- the French National Research Agency;
- the German Research Foundation (SPP 1177 and SFB 881);
- the European Research Council (ERC-StG 240271 Galactica);
- the Istituto Nazionale di Astrofisica at Padova;
- the Johns Hopkins University;
- the National Science Foundation of the USA (AST-0908326);
- the W. M. Keck foundation;
- the Macquarie University;
- the Netherlands Research School for Astronomy;
- the Natural Sciences and Engineering Research Council of Canada;
- the Slovenian Research Agency;
- the Swiss National Science Foundation;
- the Science & Technology FacilitiesCouncil of the UK;
- Opticon;
- Strasbourg Observatory;
- the Universities of Basel, Groningen, Heidelberg and Sydney.
This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the GaiaData Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.
Columns
Name | Type | UCD | Unit | Description |
---|---|---|---|---|
rave_obs_id | char | meta.id |
Unique Identifier for RAVE objects, Observation Date, Fieldname, Fibernumber |
|
healpix | long | meta.code |
Hierarchical Equal-Area iso-Latitude Pixelisation value (N_side = 4096) |
|
raveid | char | meta.id |
(J2000 GCS), see Note in DR4 |
|
radeg | double | pos.eq.ra | deg |
Right Ascension (J2000) |
dedeg | double | pos.eq.dec | deg |
Declination (J2000) |
glon | double | pos.galactic.lon | deg |
Longitude (J2000 GCS) |
glat | double | pos.galactic.lat | deg |
Latitude (J2000 GCS) |
hrv | float |
spect.dopplerVeloc pos.heliocentric |
km/s |
Heliocentric radial velocity |
ehrv | float |
stat.error spect.dopplerVeloc pos.heliocentric |
km/s |
Error of Heliocentric radial velocity stat.error |
stddev_hrv | double |
stat.stddev spect.dopplerVeloc pos.heliocentric |
km/s |
Standard deviation in HRV from 10 resampled spectra |
mad_hrv | double |
stat.error stat.median |
km/s |
Median absolute deviation in HRV from 10 resampled spectra |
stn_sparv | double | stat.snr |
Signal/Noise Ratio of SPARV Pipeline V 5.x |
|
snr_k | double | stat.snr |
Signal/Noise Ratio of Kordopatis Pipeline |
|
teff_k | double | phys.temperature.effective | K |
Effective temperature |
teff_n_k | double | phys.temperature.effective | K |
Calibrated effective temperature |
eteff_k | double |
stat.error phys.temperature.effective |
K |
Effective Temperature error |
mad_teff_k | double |
stat.error stat.median phys.temperature.effective |
K |
Median absolute deviation in Teff_K from 10 resampled spectra |
stddev_teff_k | double |
stat.stddev phys.temperature.effective |
K |
Standard deviation in Teff_K from 10 resampled spectra |
logg_k | double | phys.gravity |
Log gravity (Note 2, DR5) |
|
logg_n_k | double | phys.gravity |
Log gravity (Note 2, DR5) |
|
elogg_k | double | phys.gravity |
Log gravity (Note 2, DR5) |
|
mad_logg_k | double |
stat.error stat.median phys.gravity |
Median absolute deviation of surface gravity from 10 resampled spectra |
|
stddev_logg_k | double |
stat.stddev phys.gravity |
Standard deviation of surface gravity from 10 resampled spectra |
|
met_k | double | phys.abund.Z |
[m/H] |
|
met_n_k | double | phys.abund.Z |
Calibrated metallicity [m/H] |
|
emet_k | double | phys.abund.Z |
Error of [m/H] |
|
mad_met_k | double |
stat.error stat.median phys.abund.Z |
Median absolute deviation in Met_K from 10 resampled spectra |
|
stddev_met_k | double |
stat.stddev phys.abund.Z |
Standard deviation in Met_K from 10 resampled spectra |
|
chisq_k | double | stat.fit.chi2 |
chi square [Kordopatis Stella Parameter pipeline] |
|
algo_conv_k | short | meta.code.qual |
Quality Flag for Stellar Parameter pipeline,[0..4] |
|
teff_ir | float | phys.temperature.effective | K |
Effective temperature from infrared flux method |
eteff_ir | float |
stat.error phys.temperature.effective |
K |
Error of effective temperature from infrared flux method |
ir_direct | char | meta.code |
Infrared flux method flag (Note 5, DR5) |
|
mg | float | phys.abund.Z |
[Mg/H] abundance of Mg |
|
mg_n | short | meta.number |
Number of used spectral lines in calc. of [Mg/H] |
|
al | float | phys.abund.Z |
[Al/H] abundance of Al |
|
al_n | short | meta.number |
Number of used spectral lines in calc. of [Al/H] |
|
si | float | phys.abund.Z |
[Si/H] abundance of Si |
|
si_n | short | meta.number |
Number of used spectral lines in calc. of [Si/H] |
|
ti | float | phys.abund.Z |
[Ti/H] abundance of Ti |
|
ti_n | short | meta.number |
Number of used spectral lines in calc. of [Ti/H] |
|
fe | float | phys.abund.Z |
[Fe/H] abundance of Fe |
|
fe_n | short | meta.number |
Number of used spectral lines in calc. of [Fe/H] |
|
ni | float | phys.abund.Z |
[Ni/H] abundance of Ni |
|
ni_n | short | meta.number |
Number of used spectral lines in calc. of [Ni/H] |
|
alpha_c | float | phys.abund |
[Alpha/Fe] [Chemical pipeline] (Note 2) |
|
chisq_c | float | stat.fit.chi2 |
chi square [Chemical pipeline] (Note 2) |
|
frac_c | float | stat.value |
Fraction of spectrum used [Chemical pipeline] (Note 2) |
|
av_schlegel | double | phys.absorption | mag |
Total Extinction in V-band from Schlegel et al. (1998) |
distance | float | pos.distance | pc |
spectrophotometric Distance (Binney et al. 2014) |
edistance | float | pos.distance | pc |
Error of spectrophotometric Distance (Binney et al. 2014) |
log_av | float | phys.absorption |
log_10(Av) optical extinction, see p4 ff, Mon. Not. R. Astron. Soc. 000, 1-8 (2012) |
|
elog_av | float |
stat.error phys.absorption |
Error of log_10(Av) optical extinction, see p4 ff, Mon. Not. R. Astron. Soc. 000, 1-8 (2012) |
|
parallax | float | pos.parallax | mas |
spectrophotometric Parallax (Binney et al. 2014) |
eparallax | float |
stat.error pos.parallax |
mas |
Error of spectrophotometric Parallax (Binney et al. 2014) |
distancemodulus_binney | float | phot.mag.distMod | mag |
Distance Modulus from Binney et al. 2014 |
edistancemodulus_binney | float | phot.mag.distMod | mag |
Error of distance Modulus from Binney et al. 2014 |
fit_flag_binney | int | meta.code.qual |
See final paragraph 3 (Binney et al. 2014) |
|
fitquality_binney | float | meta.code.qual |
Given by symbol F in eq 15 of Binney et al. (2014) |
|
n_gauss_fit | int | meta.number |
Number of components required for multi-aussian distance modulus fit |
|
gauss_mean_1 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_sigma_1 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_frac_1 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_mean_2 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_sigma_2 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_frac_2 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_mean_3 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_sigma_3 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
gauss_frac_3 | float | stat.fit.param |
Property of multi-Gaussian distance modulus fit, see Section 9, eq. 5 |
|
c1 | char | meta.code |
1.st minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c2 | char | meta.code |
2.nd minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c3 | char | meta.code |
3.rd minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c4 | char | meta.code |
4.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c5 | char | meta.code |
5.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c6 | char | meta.code |
6.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c7 | char | meta.code |
7.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c8 | char | meta.code |
8.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c9 | char | meta.code |
9.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c10 | char | meta.code |
10.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c11 | char | meta.code |
11.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c12 | char | meta.code |
12.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c13 | char | meta.code |
13.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c14 | char | meta.code |
14.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c15 | char | meta.code |
15.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c16 | char | meta.code |
16.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c17 | char | meta.code |
17.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c18 | char | meta.code |
18.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w] ) |
|
c19 | char | meta.code |
19.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
c20 | char | meta.code |
20.th minimum distance to base spectrum given by one of the types (enumeration [a,b,c,d,e,g,h,n,o,p,t,u,w]) |
|
rep_flag | short | meta.code.qual |
0 => single observation, 1 => more than one observation |
|
clustar_flag | short | meta.code.qual |
0 => not a targeted cluster observation, 1 => targeted cluster observation |
|
footprint_flag | short | meta.code.qual |
1 => in RAVE selection function footprint, 0 => outside footprint |
|
id_tgas_source | long | meta.id |
TGAS source identifier |
|
matchflag_tgas | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
ra_tgas | double | pos.eq.ra | deg |
TGAS Right Ascension (epocflag= 2015) |
de_tgas | double | pos.eq.dec | deg |
TGAS Declination (epocflag= 2015) |
pmra_tgas | double |
pos.pm pos.eq.ra |
mas/yr |
Proper motion (Right Ascension) |
pmra_error_tgas | double |
stat.errror pos.pm pos.eq.ra |
mas/yr |
Error of proper motion (RA) |
pmde_tgas | double |
pos.pm pos.eq.dec |
mas/yr |
Proper motion (Declination) |
pmde_error_tgas | double |
stat.error pos.pm pos.eq.dec |
mas/yr |
Error of proper motion (DE) |
parallax_tgas | double | pos.parallax | mas |
Parallax |
parallax_error_tgas | double |
stat.error pos.parallax |
mas |
Error of parallax |
phot_g_mean_mag_tgas | double |
phot.mag em.opt.g |
mag |
G-band mean magnitude from TGAS |
phot_g_mean_flux_tgas | double |
phot.flux stat.mean em.opt |
"electron".s**-1 |
Error on G-band mean flux from TGAS |
phot_g_mean_flux_error_tgas | double |
stat.error phot.flux stat.mean em.opt |
"electron".s**-1 |
Error on G-band mean flux from TGAS |
id_hipparcos | char | meta.id |
Hipparcos identifier |
|
id_tycho2 | char | meta.id |
TYCHO2 identifier |
|
dist_tycho2 | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [orig. period, approx. formula] (see Note) |
matchflag_tycho2 | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
btmag_tycho2 | float |
phot.mag em.opt.B |
mag |
BT magnitude from TYCHO2 |
ebtmag_tycho2 | float |
stat.error phot.mag em.opt.B |
mag |
Error of BT magnitude from TYCHO2 |
vtmag_tycho2 | float |
phot.mag em.opt.V |
mag |
VT magnitude from TYCHO2 |
evtmag_tycho2 | float |
stat.error phot.mag em.opt.V |
mag |
Error of VT magnitude from TYCHO2 |
pmra_tycho2 | float |
pos.pm pos.eq.ra |
mas/yr |
Proper Motion (Right Ascension) |
epmra_tycho2 | float |
stat.error pos.pm pos.eq.ra |
mas/yr |
Proper Motion error (Right Ascension) |
pmde_tycho2 | float |
pos.pm pos.eq.dec |
mas/yr |
Proper motion (Declination) |
epmde_tycho2 | float |
stat.error pos.pm pos.eq.dec |
mas/yr |
Proper Motion error (Declination) |
id_ucac4 | char | meta.id |
UCAC4 identifier |
|
dist_ucac4 | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [J2000] (see Note) |
matchflag_ucac4 | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
pmra_ucac4 | float |
pos.pm pos.eq.ra |
mas/yr |
Proper Motion (Right Ascension) |
epmra_ucac4 | float |
stat.error pos.pm.pos.eq.ra |
mas/yr |
Proper Motion error (Right Ascension) |
pmde_ucac4 | float | pos.pm | mas/yr |
Proper Motion (Declination) |
epmde_ucac4 | float |
stat.error pos.pm pos.eq.dec |
mas/yr |
Proper Motion error (Declination) |
id_ppmxl | long | meta.id |
PPMXL identifier |
|
dist_ppmxl | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [J2000] (see Note) |
matchflag_ppmxl | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
pmra_ppmxl | float |
pos.pm pos.eq.ra |
mas/yr |
Proper Motion (Right Ascension) |
epmra_ppmxl | float |
stat.error pos.pm pos.eq.ra |
mas/yr |
Proper Motion error (Right Ascension) |
pmde_ppmxl | float | pos.pm | mas/yr |
Proper Motion (Declination) |
epmde_ppmxl | float |
stat.error pos.pm pos.eq.dec |
mas/yr |
Proper Motion error (Declination) |
id_2mass | char | meta.id |
2MASS identifier |
|
dist_2mass | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [J2000] (see Note) |
matchflag_2mass | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
jmag_2mass | float |
phot.mag em.IR.J |
mag |
J selected default magnitude from 2MASS |
ejmag_2mass | float |
stat.error phot.mag em.IR.J |
mag |
error 2MASS J magnitude |
hmag_2mass | float |
phot.mag em.IR.H |
mag |
H selected default magnitude from 2MASS |
ehmag_2mass | float |
stat.error phot.mag em.IR.H |
mag |
error 2MASS H magnitude |
kmag_2mass | float |
phot.mag em.IR.K |
mag |
K selected default magnitude from 2MASS |
ekmag_2mass | float |
stat.error phot.mag em.IR.K |
mag |
error 2MASS K magnitude |
id_allwise | char | meta.id |
ALLWISE identifier |
|
dist_allwise | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [J2000] |
matchflag_allwise | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
w1mag_allwise | float |
phot.mag em.opt |
mag |
W1 magnitude from ALLWISE |
ew1mag_allwise | float |
stat.error phot.mag em.opt |
mag |
Error W1 magnitude from ALLWISE |
w2mag_allwise | float |
phot.mag em.opt |
mag |
W2 magnitude from ALLWISE |
ew2mag_allwise | float |
stat.error phot.mag em.opt |
mag |
Error W2 magnitude from ALLWISE |
w3mag_allwise | float |
phot.mag em.opt |
mag |
W3 magnitude from ALLWISE |
ew3mag_allwise | float |
stat.error phot.mag em.opt |
mag |
Error W3 magnitude from ALLWISE |
w4mag_allwise | float |
phot.mag em.opt |
mag |
W4 magnitude from ALLWISE |
ew4mag_allwise | float |
stat.error phot.mag em.opt |
mag |
Error W4 magnitude from ALLWISE |
cc_flags_allwise | char | meta.code |
prioritized artifacts affecting the source in each band |
|
ext_flg_allwise | int | meta.code |
probability source morphology is not consistent with single PSF |
|
var_flg_allwise | char | meta.code |
probability that flux varied in any band greater than amount expected from unc.s |
|
ph_qual_allwise | char | meta.code | mag |
photometric quality of each band (A=highest, U=upper limit) |
dist_apassdr9 | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [J2000] |
matchflag_apassdr9 | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
bmag_apassdr9 | float |
phot.mag em.opt.B |
mag |
B magnitude from APASSDR9 |
ebmag_apassdr9 | float |
stat.error phot.mag em.opt.B |
mag |
error B magnitude from APASSDR9 |
vmag_apassdr9 | float |
phot.mag em.opt.V |
mag |
V magnitude from APASSDR9 |
evmag_apassdr9 | float |
stat.error phot.mag em.opt.V |
mag |
error V magnitude from APASSDR9 |
gpmag_apassdr9 | float |
phot.mag em.opt |
mag |
g" magnitude from APASSDR9 |
egpmag_apassdr9 | float |
stat.error phot.mag em.opt |
mag |
g" magnitude from APASSDR9 |
rpmag_apassdr9 | float |
phot.mag em.opt |
mag |
r" magnitude from APASSDR9 |
erpmag_apassdr9 | float |
stat.error phot.mag em.opt |
mag |
r" magnitude from APASSDR9 |
ipmag_apassdr9 | float |
phot.mag em.opt |
mag |
i" magnitude from APASSDR9 |
eipmag_apassdr9 | float |
stat.error phot.mag em.opt |
mag |
i" magnitude from APASSDR9 |
id_denis | char | meta.id |
DENIS identifier |
|
dist_denis | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [J2000] (see Note) |
matchflag_denis | char | meta.code |
Crossmatch quality flag (Note 7, DR5) |
|
imag_denis | float |
phot.mag em.opt.I |
mag |
Catalog I magnitude |
eimag_denis | float |
stat.error phot.mag em.opt.I |
mag |
error DENIS I magnitude |
jmag_denis | float |
phot.mag em.IR.J |
mag |
J selected default magnitude from DENIS |
ejmag_denis | float |
stat.error phot.mag em.IR.J |
mag |
error DENIS J magnitude |
kmag_denis | float |
phot.mag em.IR.K |
mag |
K selected default magnitude |
ekmag_denis | float |
stat.error phot.mag em.IR.K |
mag |
error DENIS K magnitude |
id_usnob1 | char | meta.id |
USNOB-1 identifier |
|
dist_usnob1 | float | pos.angDistance | arcsec |
Center Distance Target-Catalog [J2000] (see Note) |
matchflag_usnob1 | char | meta.code |
Crossmatch quality flag |
|
b1mag_usnob1 | float |
phot.mag em.opt.B |
mag |
B1 mag from USNO-B |
r1mag_usnob1 | float |
phot.mag em.opt.R |
mag |
R1 mag from USNO-B |
b2mag_usnob1 | float |
phot.mag em.opt.B |
mag |
B2 mag from USNO-B |
r2mag_usnob1 | float |
phot.mag em.opt.R |
mag |
R2 mag from USNO-B |
imag_usnob1 | float |
phot.mag em.opt.I |
mag |
I magnitude USNOB1 |
pmra_usnob1 | float |
pos.pm pos.eq.ra |
mas/yr |
Proper Motion (Right Ascension) |
epmra_usnob1 | float |
stat.error pos.pm.pos.eq.ra |
mas/yr |
Proper Motion error (Right Ascension) |
pmde_usnob1 | float | pos.pm | mas/yr |
Proper Motion (Declination) |
epmde_usnob1 | float |
stat.error pos.pm pos.eq.dec |
mas/yr |
Proper Motion error (Declination) |
obsdate | int | time.obs | YYYYMMDD |
Observation Date (YYYYMMDD) |
fieldname | char |
meta.id meta.file |
Center of Observed Field (RA/Dec) |
|
fibernumber | short | meta.id.instr.part | [1..150] |
Instrument fiber number (2df) |
platenumber | short |
meta.id instr.plate |
[1..3] |
Number of fieldplate on instrument |
mjd_obs | double | time | day |
Modfied Julian Date |
lst_start | char | time.start | timestamp |
Local Sideral Time at start of exposure |
lst_end | char | time.end | timestamp |
Local Sideral Time at end of exposure |
utc_start | char | time.start | timestamp |
Coordinated Universal Time at start of exposure (insecure) |
utc_end | char |