Had some spare time today so decided to look up a few background galaxies.
Here's some lum data of NGC5139 (10x5min subs) taken with the ED80 ans QSI683. I went looking for the galaxy to the right using CDC and DSS images. Works pretty well - I believe it is this one:
http://ned.ipac.caltech.edu/cgi-bin/...lat=-48d14m10s
Also did a comparison of an inverted crop of my image to the ESO 1m Schmidt reference image - quite amazed what you can do in under an hour from a couple of km's from the centre of Brisbane using an 80 mm refractor.
Images in order:
1. My NGC5139 full frame
2. Same as 1 with ESO image overlayed
3. CDC DSS image I used to identify the galaxy
4. My inverted crop
5. The 1m Schmidt reference image
Thanks for looking.