The ETX 80 can be used for widefield piggyback shots of the Milky Way, Star Fields, and some brighter Nebulas. I looked at your Sony camera on line and it looks like the max exp time on it is 15 sec which is a little short, but you might get some decent consellation shots if you raise the ISO all the way. At the minimum you should get a DSLR, entry level can be found for 300-400 dollars. Once you get the DSLR running on top of your ETX you can get some decent shots that will get you used to shooting at night and editing the photos. Feel free to check out the pics on my profile, they were shot with an entry level DSLR on top of a ETX 60.