VizieR

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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=187.180408440925987 +11.755085458400, eq=J2000, rs=0.005
Post annotation about this record
ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (187.180408440925987+11.755085458400)[FK5/J2000] (pos.angDistance)
_RAJ200012 28 43.29802582224 "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+11 45 18.3076502396 "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)
_RAB195012 26 11.21404961739 "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+12 01 53.0627253276 "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)
_Glon282.70358907781088 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+73.72814114434475 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?983757/983757og  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_nameWIRCam  instrument name (meta.id;instr)
obs_id983757  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 2009-08-31T00:00:00 s timestamp of date the data becomes publicly available (time.epoch)
target_nameVCC1125  name of intended target (meta.id)
s_ra187.180408440925987 deg (i) right ascension of central coordinates (J2000) (s_ra) (pos.eq.ra;meta.main)
s_dec+11.755085458400 deg (i) declination of central coordinates (J2000) (s_dec) (pos.eq.dec;meta.main)
s_fov 0.506657891951333   size of the region covered, ∼diameter of minimum bounding circle (instr.fov;instr.pixel)
s_regionPolygon ICRS 186.99800232308297 11.93401568396527 187.36310544922202 11.934427171943952 187.36287576140052 11.576196589647196 186.997696673478 11.575650611079865  region bounded by observation (obs.field)
s_resolution    typical spatial resolution (pos.angResolution)
s_xel1 4246   dimensions (number of pixels) along one spatial axis (meta.number)
s_xel2 4257   dimensions (number of pixels) along the other spatial axis (meta.number)
t_min54576.3328483 d start time of observation (MJD) (t_min) (time.epoch)
t_max54576.3333691 d end time of observation (MJD) (t_max) (time.epoch)
t_exptime 15.00000000000000 s exposure time of observation (time.expo)
t_resolution 15.00000000000000   typical temporal resolution (time.resolution)
t_xel 3   dimensions (number of pixels) along the time axis (time.scale)
em_min 1.48650000000e-06 m start spectral coordinate value (instr.bandpass)
em_max 1.77550000000e-06 m stop spectral coordinate value (instr.bandpass)
em_res_power 5.63999986649   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-e15a-013d413835b8  (i) primary key (meta.id.part;meta.main)
lastmodified 2017-12-09T10:09:51 s (i) timestamp of last modification of the metadata UTC (UTC) (lastmodified) (time.epoch)
  
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