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=311451
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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)
_RAJ200019 11 01.262 "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+73 25 27.71 "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)
_RAB195019 12 00.432 "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+73 20 20.10 "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)
_Glon104.723745 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+24.542399 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)

expnum311451  (i) [1/] Exposure unique identifier (meta.ref)
RAJ200019 11 01.3 "h:m:s" (i) Right Ascension (J2000) at the beginning of the exposure (pos.eq.ra;meta.main)
DEJ2000+73 25 28 "d:m:s" (i) Declination (J2000) at the beginning of the exposure (pos.eq.dec;meta.main)
ObsDate 1995-05-19T15:13:47 s Observation date (based on universal time, in DMF format = seconds since 1980) (time.epoch;obs)
ExpTime 9138 s Exposure time in seconds for the exposure (time.duration;obs.exposure)
classf  Class of observation, coming from cfht (Note)   (meta.code;obs)
scienceC   [YCFHOT] Exposure Science classification (Note)   (meta.code.class)
previewS   [YCILPST] Existence of a preview (Note)   (meta.ref.url;pos.frame)
ObsTypeFLAT  Observation type (BIAS, FLAT, OBJECT, etc...) (meta.note)
ObjectFLAT 6730/20  Target name as typed by the observer (meta.id)
InstrumSISFP  Name of the instrument (meta.id;instr)
DetectorLORAL3  Name of the detector in use for this exposure (meta.id;instr.det)
airmass 1.741   Value of the airmass at the beginning of the exposure (obs.airMass)
FocusCASS  Name of the telescope focus in use (meta.id;instr)
PInameBalkowski  Name of the Principal Investigator as typed by the support astronomer (obs.observer)
ObserverMM PA  Observer name as typed by the support astronomer (obs.observer)
RelDate 1997-05-19T15:13:47 s Release date of the exposure in DMF format (seconds since 1980) (time.epoch)
X 296 pix Dimension of the image (X) (instr.fov;instr.pixel)
Y 256 pix Dimension of the image (Y) (instr.fov;instr.pixel)
runID1995IF28  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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