NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Longitude
From: Bill B
Date: 2013 Jun 27, 19:27 -0400
From: Bill B
Date: 2013 Jun 27, 19:27 -0400
On 6/27/2013 4:20 PM, Antoine Couëtte wrote: > ------------------------------------------------------------------------ > Your averaged observations time is UT = 14h24m57.0S Agreed. I misentered for 14h24m55s UT > > Your averaged observations heights is 104°40'48. Assuming an estimate of > -3'12 for your index error yields an observed averaged value of 104°44'0 > to be divided by 2 into a "conventional/standard height" of 52°22'. Unless I made the same blunder 4 times in a row, I obtain 104°40'28" for average observed height. Points for style for prorating the ID over 6m 11"! When I prorate I obtain +3!0. (Start time to average time/6m 11s). Revised: Average time: 14h 24m 57s UT Average Hs: 104° 40' 28" Prorated IC: +03!0 Average Ha 104° 43' 28" Average Ha /2 = 52° 21!7 Refraction: -0!7 Ho: 52° 21!0 Using the Navigator software I obtain longitude 76° 26!0 W My level of confidence in Navigator's short game is not high, so I need to try some time sights as a sanity check, but I'm brain dead now. Bill B
