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Re: Precomputation- was Sun lines was Moonrise video
From: Gary LaPook
Date: 2013 May 4, 23:48 -0700
From: Gary LaPook
Date: 2013 May 4, 23:48 -0700
| I revised my prior example of precomputing Hp for creation of a graph for doing the celestial landfall procedure. I made this change for "purists" because the adjustment from the AP to the coordinates of the destination should be done prior to applying the refraction correction. In the real world this refinement makes no real difference, maybe a possible one or two tenths of a minute, maybe a whole minute, but since, in the end you will be looking at a graph to determine the actual Hp, any such slight differences will be lost in the scale of the graph. See: http://fer3.com/arc/img/123867.hp%20graph.pdf http://fer3.com/arc/img/123867.howland%20graph.pdf http://fer3.com/arc/img/123852.almanac-1937-22.pdf http://fer3.com/arc/img/123852.ho%20249.pdf http://fer3.com/arc/img/123852.precomp%20photos.pdf gl gl --- On Sat, 5/4/13, Gary LaPook <garylapook@pacbell.net> wrote:
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