One thing I'm still not getting (as I get back into the hobby) is that, when I left, I was expecting to be needing to get 15+ minute exposures with the cameras I was using. I didn't have the SBIG years ago (and am only borrowing it now), I was using an Atik One 6mp camera, but started out with an Atik 383l mono and along the way tried out a few other KAF-8300 based cameras and one or two other CCDs.
I'm strongly leaning towards a OSC camera for my first camera purchase - or an upgrade to my mount. The mount is, of course, the AVX in my sig and it's been *okay* at short focal lengths with either the SBIG or my Nikon as long as I only image to the east. I cannot reliable get the longer subs I need for the ST-8300 or anything to the west.
So upgrade the mount, right?
But, I'm seeing (and trying to wrap my mind around) people doing the "lots and lots of shorter exposures" thing with the CMOS cams, and I'm wondering if I went that route then I could hold off upgrading the mount for the time being? Collecting a few dozen 3-5 minute subs should be pretty doable I think? Especially because (for the moment) I'm only imaging at 300-420mm focal length?
*note* I'm trying to get a better understanding of how to determine correct exposure length with a CCD/CMOS given optics, sky conditions, sensor, etc. Some of the discussions I've read through here on CN are incredibly helpful, but I'm at information overload right now...