Hi,
This should possibly be in the beginners section, but could someone explain the science behind why exactly a mirror cell is required as opposed to say a flat rigid plate supporting the whole mirror?
I've just been reading on mirror cell deformations here
http://www.atmpage.org/contrib/Holm/...s/compare.html and was wondering if it is worth building say a 3 point mirror cell for an 8" mirror. this is a standard bintel scope with the edge supported mirror. would it make any difference at all?
what mirror size would a mirror cell start making a difference?
if it is to allow cooling, would a refrigerated cooled plate do the job?
which is the best area to place temperature sensors to measure mirror temperature? bottom, sides, upper corner?