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Originally Posted by Scoper
Another concern I did have was the size of the secondary mirror--at about 60mm it is 1/4 the size of the primary! However judging by the views of Jupiter this should not be a problem---I've come to believe that the supposed "destructive effects" of the central obstruction in reflectors is grossly exagerated
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The secondary is actually 63mm minor axis, and the holder contributes maybe another 3mm making for a total obstruction of about 26%.
One could go a size smaller, but I dont think theres much to gain other than loosing illuminated field on that 31mm nagler
I would be interested to know how your 8" compares on Jupiter, as I've been tossing around the idea of building a long f-ratio 8" planetary scope using premium components.