NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2013 May 9, 20:01 -0700
Samuel,
11' 45" = 11.7' (divide seconds of arc by 60 and round to the nearest tenth)
It is much easier to do it this way. 1' = 1 nautical mile thus 0.1' = 1 tenth of a nautical mile. Working in seconds of arc isn't practical. When reading the sextant micrometer drum I hope you are getting minutes and tenths. The Nautical Almanac uses minutes and tenths also. Latitude, longitude, declination, GHA, LHA, all need to be in minutes and tenths otherwise you are looking for trouble.
Greg Rudzinski
Re: Henning Umland's programs?
From: Samuel
Date: 2013 May 9, 19:32 -0700
I still don't understand the minutes and seconds format.
Example 123 degrees 11' 45"
For Umland's program (Sight Reduction) would that be 123 (degrees) then in the next box 11.45 minutes?
If I'm wrong how would the example above be expressed?
Thank you.
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