| B/cfht/cfht | Log of CFHT Exposures (CADC, 1979-) Old Observation Log (October 2002 to 2007) (original column names in green) (631125 rows) | expnum=651627 |
Note: The column expnum provides an access to details on the exposures, and a link to the Preview and Retrieval System via the CADC
| Column | Value | Explain (UCD) | |
| _RAJ2000 | 22 57 28.620 | "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 | +20 45 49.00 | "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) |
| _RAB1950 | 22 55 01.747 | "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 | +20 29 45.56 | "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) |
| _Glon | 090.061947 | 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 | -34.733017 | 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) |
| expnum | 651627 | (i) [1/] Exposure unique identifier (meta.id;meta.main) | |
| RAJ2000 | 22 57 28.6 | "h:m:s" | (i) Right Ascension (J2000) at the beginning of the exposure (pos.eq.ra;meta.main) |
| DEJ2000 | +20 45 49 | "d:m:s" | (i) Declination (J2000) at the beginning of the exposure (pos.eq.dec;meta.main) |
| ObsDate | 2002-08-21T12:19:27 | s | (i) Observation date (based on universal time, in DMF format = seconds since 1980) (time.epoch;obs) |
| ExpTime | 10 | s | Exposure time in seconds for the exposure (time.duration;obs.exposure) |
| class | c | Class of observation, coming from cfht (Note) (meta.code;obs) | |
| science | C | [YCFHOT] Exposure Science classification (Note) (meta.code.class) | |
| preview | [YCILPST] Existence of a preview (Note) (meta.ref.url;pos.frame) | ||
| ObsType | COMPARISON | Observation type (BIAS, FLAT, OBJECT, etc...) (meta.note) | |
| Object | TH/AR | Target name as typed by the observer (meta.id) | |
| Instrum | GECKO | Name of the instrument (meta.id;instr) | |
| Detector | EEV1 | Name of the detector in use for this exposure (meta.id;instr.det) | |
| airmass | 1.030 | Value of the airmass at the beginning of the exposure (obs.airMass) | |
| Focus | CASS | Name of the telescope focus in use (meta.id;instr) | |
| PIname | unknown | Name of the Principal Investigator as typed by the support astronomer (obs.observer) | |
| Observer | SHKOLNIK | Observer name as typed by the support astronomer (obs.observer) | |
| RelDate | 2003-08-22T12:19:27 | s | Release date of the exposure in DMF format (seconds since 1980) (time.epoch) |
| X | 200 | pix | Dimension of the image (X) (instr.fov;instr.pixel) |
| Y | 4608 | pix | Dimension of the image (Y) (instr.fov;instr.pixel) |
| runID | unknown | 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) | ||
| CFHT | Archive | Dearchive Request (meta.ref.url) | |
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