FITS tables containing source lists are produced for each image by Mike Irwin. There is one source list for each CCD in a given image. They can be found at the same location as the images.
A typical header indicating the nature of fields in the FITS table can be found
in Appendix 3. Source positions are given as RA and DEC and as X- and Y-
coordinates relative to a reference point; the projection used is Zenithal
Polynomial (ZPN).
Further information on the contents of the headers anf the definition of each
column is available in [4].
The highest magnitude detected varies according to the exposure time but never
exceeds 29 and the g--band isusually the deepest, although the i--band will
be used for XID purposes because it is consistently available for every field
with WFC data. The shallowest band is usually the U--band.
Number densities vary between 20000 and 75000 per square degree depending
on the depth and on each field's galactic latitude,
as can be seen on Fig. (d).