Quote:
Originally Posted by astronobob
Grouse resolution - best Ive seen of Callisto detail - amaizing !!!
So you have used EP in the focus train, is that correct - interesting ?
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Yes correct, I have the EP sliding inside a Skywatcher adaptor which has been internally machined to a close fit and can be locked in position at the required distance from the TV 2.5PM to give me the arcsec/pixel I need.
In my case it is 8.5pixels to 1 arcsec. This is the max res of my 508mm mirror 0.23/2 = 0.115. Callisto being nearly 1 arcsec dia I estimate I would have 60 pixels covering it. Plenty enough to capture some shading seeing permitted. Bird said it is one of the best amateur Callisto images he has seen, praise from on high indeed!
Cheers, Phil