VizieR

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VizieR

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B/cfht/obscore Log of CFHT Exposures (CADC, 1979-)
The CFHT Observation logs (sample) (original column names in green) (2557207 rows)
  -c=211.793773435178991 +35.060137667751, eq=J2000, rs=0.005
Post annotation about this record
ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (211.793773435178991+35.060137667751)[FK5/J2000] (pos.angDistance)
_RAJ200014 07 10.50562444296 "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+35 03 36.4956039025 "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)
_RAB195014 05 01.34892296802 "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+35 17 50.4383402206 "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)
_Glon063.70941977718272 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+71.99224462103692 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?1704553/1704553o  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_id1704553  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 2015-08-31T00:00:00 s timestamp of date the data becomes publicly available (time.epoch)
target_nameKKR3  name of intended target (meta.id)
s_ra211.793773435178991 deg (i) right ascension of central coordinates (J2000) (s_ra) (pos.eq.ra;meta.main)
s_dec+35.060137667751 deg (i) declination of central coordinates (J2000) (s_dec) (pos.eq.dec;meta.main)
s_fov 1.400460569448860   size of the region covered, ∼diameter of minimum bounding circle (instr.fov;instr.pixel)
s_regionpolygon 211.18815431538462 35.55607487108175 212.39469595592004 35.55920894724497 212.39274491588546 34.561546901165016 211.19960403400063 34.558163548295006  region bounded by observation (obs.field)
s_resolution    typical spatial resolution (pos.angResolution)
s_xel118984   dimensions (number of pixels) along one spatial axis (meta.number)
s_xel219274   dimensions (number of pixels) along the other spatial axis (meta.number)
t_min56774.5312778 d start time of observation (MJD) (t_min) (time.epoch)
t_max56774.5364884 d end time of observation (MJD) (t_max) (time.epoch)
t_exptime 450.19699096679688 s exposure time of observation (time.expo)
t_resolution 450.19699096679688   typical temporal resolution (time.resolution)
t_xel 1   dimensions (number of pixels) along the time axis (time.scale)
em_min  m start spectral coordinate value (instr.bandpass)
em_max  m stop spectral coordinate value (instr.bandpass)
em_res_power 3.01108002663   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_id00000000-0000-0000-7f86-0145a353bea3  (i) primary key (meta.id.part;meta.main)
lastmodified 2021-02-19T18:51:51 s (i) timestamp of last modification of the metadata UTC (UTC) (lastmodified) (time.epoch)
  
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