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) (2859201 rows)
  -c=005.128351859714410 +28.627357669327, eq=J2000, rs=0.005
Post annotation about this record
ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (005.128351859714410+28.627357669327)[FK5/J2000] (pos.angDistance)
_RAJ200000 20 30.80444633146 "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+28 37 38.4876095768 "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 17 53.99961002055 "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+28 21 00.1046989895 "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)
_Glon114.76721963354940 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-33.75364882088362 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?1160107/1160107o  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_id1160107  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 2011-02-28T00:00:00 s timestamp of date the data becomes publicly available (time.epoch)
target_nameAbell 21  name of intended target (meta.id)
s_ra005.128351859714410 deg (i) right ascension of central coordinates (J2000) (s_ra) (pos.eq.ra;meta.main)
s_dec+28.627357669327 deg (i) declination of central coordinates (J2000) (s_dec) (pos.eq.dec;meta.main)
s_fov 1.400463925317460   size of the region covered, ∼diameter of minimum bounding circle (instr.fov;instr.pixel)
s_regionpolygon 5.687677391647809 28.1290944769585 4.5735055583437 28.125705844983997 4.564347353511393 29.123628801124156 5.6879775875803045 29.126757766384777  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_min55211.3056942 d start time of observation (MJD) (t_min) (time.epoch)
t_max55211.3061581 d end time of observation (MJD) (t_max) (time.epoch)
t_exptime 40.08399963378906 s exposure time of observation (time.expo)
t_resolution 40.08399963378906   typical temporal resolution (time.resolution)
t_xel 1   dimensions (number of pixels) along the time axis (time.scale)
em_min 4.07800000000e-07 m start spectral coordinate value (instr.bandpass)
em_max 5.70200000000e-07 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-faf4-013ec241177e  (i) primary key (meta.id.part;meta.main)
lastmodified 2017-12-06T11:38:53 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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