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post #4 of Old 11-05-2019 Thread Starter
CrispyCringle
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Re: Question for the Cel Nav Pros

Well, I did a test shot and reduction. Since Im sort of on my own I use a pretty nice excel sight reduction calculator to check my work (free at Interactive Spreadsheets for Celestial Navigation ).

What it told me was I need to use height above sea level. I was about 3.1 miles off of actual GPS position using height above sea level dip correction, and about 17 nm off using height above ground. Ive just done it once tho. It could be that I was horribly off and just dumb luck that made the results work that way.

Last edited by CrispyCringle; 11-05-2019 at 09:42 AM.
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