Quote:
Originally Posted by Merlin66
Do you have the focal lengths of the reducers??
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I found the Focal Length of the Astro-physics one
Focal length is 700mm (27.6")
Distance needed to achieve 0.75x FR - 175mm (6.9")
Found it here:
http://www.docstoc.com/docs/52188756...ompression-and
So if I keep the distance between the two Focal Reducers at around 175mm I should be ok (I hope)