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Hi
We have been down this path before in regards to which SCT is the best for planetary imaging. The truth is, it is all to do with technique just look at Mikes work with a 10" Dob and I have seen some very good work done with an 8" LX90 (serach forum). When it come to planetary imaging, apature is important, but technique is the key. It real does not matter whether you use a 8" , 9.25" 10" SCT etc what you need is excellent collimation, telescope cooled to apparent temperture, good quality zero-shift focuser, excellent quality barlow, excellent quality UV/IR filter, excellent quality industrial web cam, a good mid range PC with 7400rpm HHD, 1.6 Ghz processor or high and above all excellent see conditions. If you can do all this an practice, parctice, parctice then your current 9.25" SCT will work equally as well as any scope used for planetary imaging.
Anthony
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