VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

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B/cfht/obscore Log of CFHT Exposures (CADC, 1979-)
The CFHT Observation logs (sample) (original column names in green) (2850658 rows)
  -c=344.369431520588023 +20.763958333282, eq=J2000, rs=0.005
Post annotation about this record
ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (344.369431520588023+20.763958333282)[FK5/J2000] (pos.angDistance)
_RAJ200022 57 28.66356494112 "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+20 45 50.2499998170 "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)
_RAB195022 55 01.79057846494 "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+20 29 46.8064766828 "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)
_Glon090.06234247867425 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-34.73280748853334 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?651828/651828o  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_nameGECKO  instrument name (meta.id;instr)
obs_id651828  internal dataset identifier (meta.id;meta.dataset)
dataproduct_typespectrum  type of product (meta.note)
calib_level1   calibration level (phot.calib;arith.zp)
obs_release_date 2003-08-24T11:54:19 s timestamp of date the data becomes publicly available (time.epoch)
target_name51 PEG  name of intended target (meta.id)
s_ra344.369431520588023 deg (i) right ascension of central coordinates (J2000) (s_ra) (pos.eq.ra;meta.main)
s_dec+20.763958333282 deg (i) declination of central coordinates (J2000) (s_dec) (pos.eq.dec;meta.main)
s_fov 0.005562495660793   size of the region covered, ∼diameter of minimum bounding circle (instr.fov;instr.pixel)
s_regionpolygon 344.3724022534432 20.764097196391845 344.3724022479553 20.763819418614432 344.36646079331786 20.763819419125042 344.3664607878846 20.764097196902455  region bounded by observation (obs.field)
s_resolution    typical spatial resolution (pos.angResolution)
s_xel1 200   dimensions (number of pixels) along one spatial axis (meta.number)
s_xel2 10   dimensions (number of pixels) along the other spatial axis (meta.number)
t_min52509.4960128 d start time of observation (MJD) (t_min) (time.epoch)
t_max52509.5099017 d end time of observation (MJD) (t_max) (time.epoch)
t_exptime 1200.00000000000000 s exposure time of observation (time.expo)
t_resolution 1200.00000000000000   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_power112000.000000000   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_id00000000-0000-0000-5c4a-121c48404b49  (i) primary key (meta.id.part;meta.main)
lastmodified 2020-12-23T08:42:47 s (i) timestamp of last modification of the metadata UTC (UTC) (lastmodified) (time.epoch)
  
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Rules of usage of VizieR data

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