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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Daytime Venus Rising Dip Short
From: Gary LaPook
Date: 2012 May 4, 00:48 -0700
From: Gary LaPook
Date: 2012 May 4, 00:48 -0700
I took three daytime Venus observations with my MA-2 bubble sextant. I had never been able to spot a planet with my bubble sextants before. The secret for daytime planet observations is precomputing the altitude so that you can set it on your sextant and then sweep the approximate azimuth, This goes for using a marine sextant too and I have been able to see Venus in my Tamaya before. The MA -2 produced very good results. April 16, 2012 local date. 17:42:42 local time, 00:42:42 Z, April 17, 2012 From the Navy website: Celestial Navigation Data for 2012 Apr 17 at 0:42:42 UT For Assumed Position: Latitude N 34 16.6 Longitude W 118 54.0GHA DEC Hc ZN VENUS 147 04.8 N26 30.2 +64 34.6 259.9 | -0.5 0.3 0.1 -0.1:Hs 64 38 IC - 2 Corr 0 (-0.1) Ho 64 36 Int 1.4 T Celestial Navigation Data for 2012 Apr 17 at 0:43:12 UT --- On Thu, 5/3/12, Alexandre E Eremenko <eremenko@math.purdue.edu> wrote:
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