DVO keywords used with the "mextract" and "avextract" commands
Accurate as of: Oct 2007

Mextract Keywords
-----------------------
(Keyword) - (Description) - (Units)
RA - right ascension of measurement - deg
DEC - declination of measurement - deg
RA:AVE - mean RA of all measurments of an object - deg
DEC:AVE - mean DEC of all measurements of an object - deg
RA:ERR - error on RA measurment - deg
DEC:ERR - error on DEC measurement - deg
uRA - object proper motion - arcsec/yr
uDEC - object proper motion - arcsec/yr
duRA - error on uRA - arcsec/yr
duDEC - error on uDEC - arcsec/yr
PAR - ?
dPAR - ?
dR - error on RA:AVE - deg
dD - error on DEC:AVE - deg
dR:ERR - ?
dD:ERR - ?
Xp - ?
NMEAS - # of measurements associated with an object
NMISS - ?
OBJFLAGS - ?
AIRMASS - airmass of measurment
ALT - altitude of measurement - deg
AZ - azimuth of measurement - deg
EXPTIME - exposure time of measurment - sec
TIME - date of measurment - seconds from Jan 1, 1970 (default, based on $TIMEFORMAT)
FWHM - full width at half maximum of PSF fit - pixels(?)
FWHM_MAJ - length of PSF major axis - pixels(?)
FWHM_MIN - length of PSF minor axis - pixels(?)
THETA - ?
XCCD - x position of measurment on the CCD
YCCD - y position of measurment on the CCD
XMOSAIC - x position of measurment on the full mosaic
YMOSAIC - y position of measurment on the full mosaic
XCHIP - x position of measurment on the chip
YCHIP - y position of measurment on the chip
XFPA - ?
YFPA - ?
DETID - ID # for the detector
OBJID - ID # for the object
IMAGEID - ID # for the image
SKY - ?
SKY_ERR - ?
STARGAL - ?
(+ PHOTCODES)


Avextract Keywords
------------------------
(Keyword) - (Description) - (Units)
RA - right ascension of object (same as RA:AVE) - deg
DEC - declination of object (same as DEC:AVE) - deg
dRA - error on RA (same as dR) - deg
dDEC - error on DEC (same as dD) - deg
uRA - object proper motion - arcsec/yr
uDEC - object proper motion - arcsec/yr
duRA - error on uRA - arcsec/yr
duDEC - error on uDEC - arcsec/yr
PAR - ?
dPAR - ?
Xp - ?
NMEAS - # of measurements associated with an object
NMISS - ?
FLAG - ?
TYPE - ?
OBJID - ID # for the object
(+ PHOTCODES)


Photcode Suffixes
----------------------
(photcode):inst  instrumental magnitude; -2.5*log(counts)
(photcode):sys  inst magnitude adjusted by the chosen mag system zeropoint
(photcode):cal  sys magnitude adjusted by the chosen color correction
(photcode):rel  cal magnitude adjusted by a zeropoint offset due to sky varriation (default value for mextract)
(photcode):ave - <rel mag> (default value for avextract)
(photcode):err  (for mextract) the measurement error for rel magnitude, (for avextract) the error of the ave magnitude
(photcode):chisq  the chi-square of the photometry fit (valid only for avextract)
(photcode):ref  the ave magnitude value for a given photometric system ref (such as PS, SDSS, 2MASS, etc.)
