Quote:
Originally Posted by Merlin66
Andy,
This means your f7.5 scope would end up f15 (1200mm fl), f18.75 (1500mm fl), f22.5 (1800mm fl)
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Yikes! Hmmm - well that's not going to work is it!
Quote:
Originally Posted by Peter Ward
I frankly find images taken at around 1100mm a bit of a yawn. Rarely is there any filigree detail.
I'd suggest something at the FL 2500mm mark would be about right.
Assuming you dont want to be at F10, then that also means a fair sized aperture.
Now we are talking big scope....and big mount....assuming you don't want it wobbling all about the place.
So. Careful what you wish for...it could lead to aperture fever.  |
Aaaaahgghhh - thanks anyway Peter - it's going to hard to get tthat past SWMBO though
