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    Re: Nautical Almanac, HO 229 or HO 249
    From: John D. Howard
    Date: 2018 Apr 3, 15:38 -0700

    Lindsey,

    My CelNav kit is the free download Air Almanac, a TI calculator and I use the sine-cosine formula for the reduction.  My non-electronic backup is a table of the Equation of Time for the year ( or two ) and Greg Rudzinski's log-sin-cos table ( only 9 pieces of paper ) and still the sin-cos formuls.  I use a plastic Davis sextant when I travel by car - camping or visiting friends but use an old aircraft bubble sextant when I fly.

    My reasons are first - free, and second lightweight.  When I flew CRJs there was little room for the HO 249 but always had a calculator with me.  The paper backup is more for fun.

    John H.

       
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