VizieR

CfA VizieR . ADAC VizieR . CADC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . Beijing (Ch) 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) (2555120 rows)
  -c=010.777389739075600 +41.503079159868, eq=J2000, rs=0.005
Post annotation about this record
ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (010.777389739075602+41.503079159868)[FK5/J2000] (pos.angDistance)
_RAJ200000 43 06.57353737814 "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+41 30 11.0849755266 "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 40 22.15179468347 "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+41 13 45.8247186539 "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)
_Glon121.25792948750814 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-21.34159823081599 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?667940/667940p  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_nameCFH12K MOSAIC  instrument name (meta.id;instr)
obs_id667940  internal dataset identifier (meta.id;meta.dataset)
dataproduct_typeimage  type of product (meta.note)
calib_level2   calibration level (phot.calib;arith.zp)
obs_release_date 2006-02-28T10:00:00 s timestamp of date the data becomes publicly available (time.epoch)
target_nameM31 NORTH  name of intended target (meta.id)
s_ra010.777389739075600 deg (i) right ascension of central coordinates (J2000) (s_ra) (pos.eq.ra;meta.main)
s_dec+41.503079159868 deg (i) declination of central coordinates (J2000) (s_dec) (pos.eq.dec;meta.main)
s_fov 0.848072229115389   size of the region covered, ∼diameter of minimum bounding circle (instr.fov;instr.pixel)
s_regionpolygon 11.244045753159588 41.26456064050336 10.302635914857467 41.27318725212375 10.306807517868767 41.73944004021789 11.255727836593774 41.73114737619022  region bounded by observation (obs.field)
s_resolution 0.00001   typical spatial resolution (pos.angResolution)
s_xel112411   dimensions (number of pixels) along one spatial axis (meta.number)
s_xel2 8190   dimensions (number of pixels) along the other spatial axis (meta.number)
t_min52584.2536336 d start time of observation (MJD) (t_min) (time.epoch)
t_max52584.2628929 d end time of observation (MJD) (t_max) (time.epoch)
t_exptime 800.00000000000000 s exposure time of observation (time.expo)
t_resolution 800.00000000000000   typical temporal resolution (time.resolution)
t_xel 12   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 6.35483980179   typical spectral resolution (spect.resolution)
em_xel 12   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_id00000000-0000-0000-0f58-0e8060954c63  (i) primary key (meta.id.part;meta.main)
lastmodified 2021-02-19T22:45:44 s (i) timestamp of last modification of the metadata UTC (UTC) (lastmodified) (time.epoch)
  
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