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Re: Galilean eyepiece description?
From: Bill Morris
Date: 2021 Apr 24, 22:20 -0700
From: Bill Morris
Date: 2021 Apr 24, 22:20 -0700
Paul, I give a fair amount of detail of the Coutinho pattern sextant telescope here: https://sextantbook.com/?s=Coutinho-pattern The central slice of a lens is to bring the bubble into focus at the same time as observing the body at infinity.. I describe an earlier pattern of bubble sextant, which uses half a lens to bring a single level vial into focus, here:https://sextantbook.com/?s=Byrd
Kind regards
Bill Morris
Pukenui
New Zealand
