VizieR

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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=221020
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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)
_RAJ200005 35 14.563 "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)
_DEJ2000-05 22 22.60 "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)
_RAB195005 32 47.078 "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)
_DEB1950-05 24 16.02 "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)
_Glon208.991117 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-19.383514 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)

expnum221020  (i) [1/] Exposure unique identifier (meta.ref)
RAJ200005 35 14.6 "h:m:s" (i) Right Ascension (J2000) at the beginning of the exposure (pos.eq.ra;meta.main)
DEJ2000-05 22 23 "d:m:s" (i) Declination (J2000) at the beginning of the exposure (pos.eq.dec;meta.main)
ObsDate 1993-11-23T15:27:16 s Observation date (based on universal time, in DMF format = seconds since 1980) (time.epoch;obs)
ExpTime 13 s Exposure time in seconds for the exposure (time.duration;obs.exposure)
classo  Class of observation, coming from cfht (Note)   (meta.code;obs)
scienceY   [YCFHOT] Exposure Science classification (Note)   (meta.code.class)
previewI   [YCILPST] Existence of a preview (Note)   (meta.ref.url;pos.frame)
ObsTypeOBJECT  Observation type (BIAS, FLAT, OBJECT, etc...) (meta.note)
ObjectBN  Target name as typed by the observer (meta.id)
InstrumREDEYE  Name of the instrument (meta.id;instr)
DetectorNIC2  Name of the detector in use for this exposure (meta.id;instr.det)
airmass 1.986   Value of the airmass at the beginning of the exposure (obs.airMass)
FocusCASS  Name of the telescope focus in use (meta.id;instr)
PInameDougados  Name of the Principal Investigator as typed by the support astronomer (obs.observer)
ObserverDOUGADOS-CARPENTER  Observer name as typed by the support astronomer (obs.observer)
RelDate 1995-11-24T15:27:16 s Release date of the exposure in DMF format (seconds since 1980) (time.epoch)
X 256 pix Dimension of the image (X) (instr.fov;instr.pixel)
Y 256 pix Dimension of the image (Y) (instr.fov;instr.pixel)
runID1993IIF41  Run Identification, made of YYYY + Semester (I-II) + Country (C-F-H) + running number (meta.record;phot.color;em.opt.I)
CommentK PRIME  Comments as typed in by the observer (meta.note;obs.observer)

CFHTArchive  Dearchive Request (meta.ref.url)
  
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