Quote:
Originally Posted by By.Jove
Morton the classic "richest" richfield scope is a 6" f/5 (usually a newtonian). Not a 4" refractor and definitely not an 80/90mm.
The explanation as to why is somewhere in the old SciAm ATM books edited by Ingalls - it is related to the frequency distribution of stars by magnitude - which is not linear - vs the scope aperture, and field of view.
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Agreed. I like the 4" f/5 refractor as it works on the same small mount as my C6.