What you see through a DSI is about equivalent to what you'd see through a 10mm eyepiece in your scope. I've had limited luck on planets with the DSI. Saturn and jupiter turned out after much tweaking. The moon is easy to image. I've had some luck with globular clusters M13, M15 and M4. M27 came out ok, M31 is too large for any of my telescopes to capture entirely with one shot as is M42, you'd have to make a mosaic. I've found that the exposure times it comes up with after using auto-expose are wrong, too long for planets and lunar and too short for DSO's. Build a hartman mask for focus as it's the most important thing in photography and make sure you're polar aligned properly. Basically I'd say you get what you pay for and those excellent images from SBIG instruments come at a very high price.
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