NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: What is the Longest Lunar Possible?
From: Geoffrey Kolbe
Date: 2013 Jan 22, 05:43 +0000
From: Geoffrey Kolbe
Date: 2013 Jan 22, 05:43 +0000
Sorry Brad - I can find no image....
Regards
Geoffrey
At 23:04 21/01/2013, you wrote:
: http://fer3.com/arc/m2.aspx?i=122053
Regards
Geoffrey
At 23:04 21/01/2013, you wrote:
Hi Geoffrey
Attached, find an image of the optical path of the prismatic reflecting circle. Note that this is from Chauvenet and not a self generated image. It shows the optical path (dotted line) at 180 degrees!
I see how the instrument becomes sensitive at 180. While the paths are parallel, they are not colinear, generating parallax. Additionally, small displacements of the instru from the line between the two objects
What then is your view on the largest possible measurable distance, as a practical matter? Should it be limited to 170? 165?
Best Regards
Brad
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: http://fer3.com/arc/m2.aspx?i=122053
