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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Can You Bias Ho?
From: Luc Van den Borre
Date: 2014 Apr 05, 20:29 +0200
From: Luc Van den Borre
Date: 2014 Apr 05, 20:29 +0200
On 5/04/2014 20:06, Brad Morris wrote: > When attempting angles smaller than 90°, Nicolas states that the prism > does not occupy the entire FOV of the horizon path, and as such, he can > use the sextant in a normal fashion. That is, for small angles, the use > of the pentaprism is avoided entirely That's neat. Both C&P and Freiberger's blurb talk about how measurements are done in both positions though. Not that I've ever seen either instrument - perhaps it's not possible on their version (larger prism?), or perhaps it's not how they intended it to be used. It certainly simplifies things not having to do the transformation for small angles. Luc
