I find the argument made by Rick for going with a high quality diagonal mirror--greater than 1/10 wave and no turned edge-- in the 25 vs 20% obstruction thread to be pretty compelling. Now where do you guys find such critters in sizes over 3" minor axis? Most of the high grade ellipticals I've seen listed have been smaller than 2", and most of the ones I've seen larger than that have been spec'd at 1/10th wave max.
Thanks,
Jim
Thanks,
Jim
