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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Instumental error?
From: Fred Hebard
Date: 2005 Apr 20, 18:05 -0400
From: Fred Hebard
Date: 2005 Apr 20, 18:05 -0400
On Apr 20, 2005, at 5:41 PM, Alexandre Eremenko wrote: > On an earlier remark of Fred Hebbard > (Tue Apr 19 2005 - 22:46:11 EDT ) > "I would prefer that the standard deviations > be given to an extra digit". > > my question is "What for?" I mean what can be a possible > use of this extra digit be? > Alex, I didn't see your question earlier, my apologies. It's just that when you get down to around 0.2' of arc, the difference between 0.24' and 0.16' might be informative. The former is a fairly average sight, in my hands with regards to precision, while the latter is close to a superior sight. This is an intuitive response on my part, but I have not been displeased when employing it. None of this matters with regard to actual navigation, but is of interest in calibrating sextants, now that this service is no longer available. Fred
