David, I'm not sure what astro CCD control software you use, but I'm assuming you write out your astrometry data in FITS format. Depending on the software you use, you can modify the FITS header info to also include RA and DEC of the centre of each image. I know MaximDL supports this feature, so would expect others do too. You can then use this information to determine the precise pointing location. As you're aware, if you make a discovery this information is critical. You can also time stamp the exposure based on UTC or Local.
More info on the FITS headers can be located at
http://heasarc.gsfc.nasa.gov/docs/he...wg_recomm.html