VizieR

CfA VizieR . ADAC VizieR . CADC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . Beijing (Ch) VizieR .

VizieR

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B/cfht/cfht Log of CFHT Exposures (CADC, 1979-)
Old Observation Log (October 2002 to 2007) (original column names in green) (631125 rows)
  expnum=835573
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Note: The column expnum provides an access to details on the exposures, and a link to the Preview and Retrieval System via the CADC

ColumnValue  Explain   (UCD)
_RAJ200001 05 03.210 "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+02 08 45.00 "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)
_RAB195001 02 28.800 "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+01 52 41.48 "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)
_Glon129.861507 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-60.542593 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)

expnum835573  (i) [1/] Exposure unique identifier (meta.ref)
RAJ200001 05 03.2 "h:m:s" (i) Right Ascension (J2000) at the beginning of the exposure (pos.eq.ra;meta.main)
DEJ2000+02 08 45 "d:m:s" (i) Declination (J2000) at the beginning of the exposure (pos.eq.dec;meta.main)
ObsDate 2006-01-20T06:25:31 s Observation date (based on universal time, in DMF format = seconds since 1980) (time.epoch;obs)
ExpTime 4 s Exposure time in seconds for the exposure (time.duration;obs.exposure)
classa  Class of observation, coming from cfht (Note)   (meta.code;obs)
scienceC   [YCFHOT] Exposure Science classification (Note)   (meta.code.class)
preview    [YCILPST] Existence of a preview (Note)   (meta.ref.url;pos.frame)
ObsTypeACQUIRE  Observation type (BIAS, FLAT, OBJECT, etc...) (meta.note)
ObjectIC 1613  Target name as typed by the observer (meta.id)
InstrumWIRCAM  Name of the instrument (meta.id;instr)
DetectorWIRCAM  Name of the detector in use for this exposure (meta.id;instr.det)
airmass 1.451   Value of the airmass at the beginning of the exposure (obs.airMass)
FocusWIRCAM  Name of the telescope focus in use (meta.id;instr)
PInameMARSHALL MCCALL  Name of the Principal Investigator as typed by the support astronomer (obs.observer)
ObserverQSO TEAM  Observer name as typed by the support astronomer (obs.observer)
RelDate 2007-02-28T10:00:00 s Release date of the exposure in DMF format (seconds since 1980) (time.epoch)
X  pix Dimension of the image (X) (instr.fov;instr.pixel)
Y  pix Dimension of the image (Y) (instr.fov;instr.pixel)
runID2005BC37  Run Identification, made of YYYY + Semester (I-II) + Country (C-F-H) + running number (meta.record;phot.color;em.opt.I)
Comment   Comments as typed in by the observer (meta.note;obs.observer)

CFHTArchive  Dearchive Request (meta.ref.url)
  
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Rules of usage of VizieR data

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