NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sextant and Eye Optics
From: Frank Reed CT
Date: 2006 Dec 10, 22:41 EST
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From: Frank Reed CT
Date: 2006 Dec 10, 22:41 EST
Bill, you wrote:
"Indeed being off axis does matter."
That would imply that you could only measure index error in the exact
center of the field of view. Collimation of the line of sight does not matter
when the angle is zero. That is, the error in angular measurement resulting from
being off-axis is zero when the angle you're measuring is zero.
-FER
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
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To post to this group, send email to NavList@fer3.com
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