Quote:
Originally Posted by Hagar
Paul, I don't know why you bother to justify your purchase each and every time the GSO RC is spoken about. There is a football field of people just sitting on the side lines ready to pounce on your every word.
Looking at the images you have produced with your 8" GSO you have nothing to answer to. If some of the would be experts could produce the same or better results with their big expensive scopes I could see some areas for their comments but to be honest the results all stand in your favour.
By the way. I just ordered an 8" based on your results and the great image scale produced by the scope, not because it is like an expensive scope or brand name display item. Mine will also be used.
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Yes I agree, Pauls images are excellent. The little remaining problem of corner star eolongations could be handled with a flattener. I am not sure that flatteners are that sensitive to different focal lengths (no doubt within limits). For example I use a Tak FS152 flattener designed for a 1200mm APO on my AP140 at 930mm and it works perfectly.
APM sell a generic flattener and Televue have their reducer/flattener.
If you have a flattener for another scope it would make a good experiment to see which fits it.
And take heart this is no criticism of the GSO RC as expensive RCs need flatteners to some degree. A&M RCs apparently really require them.
Just goes to show the formula really is 2 mirrors (a largish secondary) and a corrector/flattener for astrophotography.
Greg.