DESCRIPTION OF DMS STELLAR CATALOGS

The catalogs for each field have 31 columns.  The first 18 columns
contain for each object the identification number, field designation,
RA and Dec, x and y coordinates on the CCD, and the magnitudes and
error estimates for the six filters.  Note that an error of 0.333 mag
means that the magnitude value corresponds to the 3 sigma limit for 
that object.  Also, an error value of -0.333 indicates that the object
should have been detected in one of the frames but was not.  Thus
the measurement is being flagged as possibly subject to a
non-statistical error.

Columns 19 through 30 refer to object classification codes from
FOCAS for each filter and image.  The codes are: s = star,
sf = fuzzy star, Fs = forced star, g = galaxy, n = noise,
d = diffuse object, l = long object, u = unknown (not detected
by FOCAS in both images of that field), and x = no image available.
When an object was classified as a star in either or both images of
a field, its classification was forced to star in each image - thus
the Fs classification.  No information was retained on the original
classification in each image.  An exception is objects
used as PSF templates; these objects already had a "forced" flag
present in FOCAS, and so the original classification was not
overwritten.  Most cases of "s" or "sf" in the catalog are objects
of this sort.  The other exceptions are all filters in the
01e and the B filter in the 10e field, for which only one image
was available.  In these cases, the classifications given are
the original FOCAS classifications.

Finally, column 31 contains comments on individual objects.
The codes are: q = quasar, c = CNELG (compact narrow emission-line
galaxy), s = star, and u = unknown (spectrum  has too low S/N ratio
to classify).  The number following "q" or "c" is the redshift, with
a "?" indicating an uncertain or unknown redshift. Other codes include
"cr" for cosmic ray and "bp" for bad pixel followed by a filter and/or
offset image code; i.e., "cr,u1" means a cosmic ray contaminates the
object in the first U image.