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VizieR

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B/cfht/obscore Log of CFHT Exposures (CADC, 1979-)
The CFHT Observation logs (original column names in green) (2239798 rows)
  -c=010.681563819564300 +40.867121817191, eq=J2000, rs=0.005
Post annotation about this record
ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (010.681563819564300+40.867121817191)[FK5/J2000] (pos.angDistance)
_RAJ200000 42 43.57531669543 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+40 52 01.6385418883 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195000 39 59.48361680193 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+40 35 36.0752213272 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon121.15602828321428 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-21.97458569827310 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)

obs_publisher_didivo://cadc.nrc.ca/CFHT?2300328/2300328o  publisher dataset identifier (meta.id;meta.dataset)
obs_collectionCFHT  short name for the data colection (meta.id;meta.dataset)
facility_nameCFHT 3.6m  telescope name (meta.id;instr.tel)
instrument_nameMegaPrime  instrument name (meta.id;instr)
obs_id2300328  internal dataset identifier (meta.id;meta.dataset)
dataproduct_typeimage  type of product (meta.note)
calib_level1   calibration level (phot.calib;arith.zp)
obs_release_date 2020-02-28T00:00:00 s timestamp of date the data becomes publicly available (time.epoch)
target_nameM32  name of intended target (meta.id)
s_ra010.681563819564300 deg (i) right ascension of central coordinates (J2000) (s_ra) (pos.eq.ra;meta.main)
s_dec+40.867121817191 deg (i) declination of central coordinates (J2000) (s_dec) (pos.eq.dec;meta.main)
s_fov 1.400463497043950   size of the region covered, ∼diameter of minimum bounding circle (instr.fov;instr.pixel)
s_regionPolygon ICRS 11.47785677888456 41.10558232938557 11.47459751401661 40.62627544604142 11.32894106328667 40.36817448855501 10.039306158993154 40.36479666014922 9.890832904638726 40.62330039878982 9.883293290251428 41.10295707435847 10.02506456540936 41.3626938759779 11.332901286826893 41.36583331809367  region bounded by observation (obs.field)
s_resolution    typical spatial resolution (pos.angResolution)
s_xel123169   dimensions (number of pixels) along one spatial axis (meta.number)
s_xel219274   dimensions (number of pixels) along the other spatial axis (meta.number)
t_min58366.5225328 d start time of observation (MJD) (t_min) (time.epoch)
t_max58366.5257873 d end time of observation (MJD) (t_max) (time.epoch)
t_exptime 281.19000244140625 s exposure time of observation (time.expo)
t_resolution 281.19000244140625   typical temporal resolution (time.resolution)
t_xel 1   dimensions (number of pixels) along the time axis (time.scale)
em_min 4.94800000000e-07 m start spectral coordinate value (instr.bandpass)
em_max 5.06600000000e-07 m stop spectral coordinate value (instr.bandpass)
em_res_power 42.43220138550   typical spectral resolution (spect.resolution)
em_xel 1   dimensions (number of pixels) along the energy axis (phys.size)
em_ucd   UCD describing the spectral axis (meta.number)
pol_states   polarization states present in the data (phys.polarization)
pol_xel    dimensions (number of pixels) along the polarization axis (phys.size)
o_ucdphot.count  UCD describing the observable axis (pixel values) (meta.number)
access_urlDatalink  URL to download the data (meta.ref.url)
access_formatapplication/x-votable+xml;content=datalink  format of the data file (meta.note)
access_estsize    estimated size of the download (meta.number)
core_id00000000-0000-0000-4338-0165a9c6004e  (i) primary key (meta.id.part;meta.main)
lastmodified 2018-12-16T01:48:28 s (i) timestamp of last modification of the metadata UTC (UTC) (lastmodified) (time.epoch)
  
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