Hi Astroron, suma 126 & All,
Don't think it is M83. The star pattern does not look right to me.
Daniel's advice is a winner.
I can certainly understand you being cagey about it -- I'd be the same way, but you will need a confirming observation from someone who knows what they are doing, can take a really good image and can weed-out a furphy quickly.
I hope you've got a good position for where the camera was pointed.
I'd suggest perhaps you get in contact with Steve Quirk at Frog Rock Observatory who does a bit of this sort of stuff:
http://my.hwy.com.au/~sjquirk/index.html
P.M me if you want the phone number.
Best,
Les D