Quote:
Originally Posted by BlakPhoenix
The main reason I was leaning towards the 9.25" was for it's ability to fill full frame sensors. From what I've read the 8" EdgeHD isn't able to do this?
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The Edge 8 will somewhat illuminate a full frame but expect plenty of light drop off towards the corners. That won’t be the case with the 9.25 (maybe a teeny bit).
For planetary imaging, you don’t need the Edge HD as you’ll always want the subject in the centre of the FOV.
If you’re wanting to get started in DSO astrophotography, I’d suggest staying away from long focal length scopes like SCTs to start with. The shorter focal lengths, such as that of the Esprit 100 and similar, are much more forgiving to get going with and the FOV is very satisifying.