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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: sextant telescopes
From: Dan Allen
Date: 2002 Oct 4, 11:57 -0700
From: Dan Allen
Date: 2002 Oct 4, 11:57 -0700
On Friday, October 4, 2002, at 10:15 AM, Hal Mueller wrote: > My Astra IIIB came with a 3.5x40 telescope. what are > people actually using? > > It appears that the 6x30 would potentially give better accuracy for > lunar distance sights. But I've never tried to reduce a lunar > distance, let alone shoot one. If you are on land, or perhaps at anchor in calm waters, 6 or 7 power scopes can definitely improve your measurements. My backyard studies show that I am more accurate with my Tamaya Jupiter and its 7 power scope than I am with some of my other sextants that have 3.5 or 4 power scopes. Move to the average 35-45' vessel on a typical day, and these higher power scopes are quite hard to use. 4 power is about right for such applications in my experience. Dan Allen