I'll give D.S.S. a look - anything
has to be simpler than Iris
I already do RAWs, after reading about Astrophotography on some other sites (as well as other posts here). There's just more that one can do with RAWs.
As to exposure times - anything over 5-10 secs. cause trails for me, owing to the lack of a tracking mount. My barndoor (or Scotch) mount is currently in the planning stages, but hopefully I can get it put together by the time Fall rolls around (generally better seeing around here).
A question regarding "stacking":
I know that I'm gaining quite a lot by doing so, but what effective
shutter speed am I getting? I'd imagine that 35 10 sec. shots wouldn't quite add up to a 350 sec. exposure (due to loss in processing, etc.), but I'm curious about what it would be equivalent to.