NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: UNK
Date: 2010 Dec 5, 20:30 -0800
Gary (I hope I haven't mixed up list names)
I too have a SNO-T sextant. The Galilean telescope, number 7 in the box, looks identical with the one shown in Bill Morris pictures and many other pictures available on the web. And with the drawing in the manual. The diameter at the objective side is 50 mm. The strut is less than 20 mm from that side.
With a strut nearer the eyepiece, as your photos show, it isn't possible to rotate the alhidad all the way; mirror and Galilean telescope collide. But the astronomical telescope, objective side diameter 43 mm, goes freely under the alhidadmirror. Perhaps your scope is taken from an astronomical scope. But the strut doesn't look the same.
Paul Werner
(I have prepared four small illustrations, less than 350kB together, but couldn't get them through.)
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------
