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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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    Re: Longhand Sight Reduction
    From: Gary LaPook
    Date: 2014 Nov 27, 18:17 -0800
    I finally got around to trying the method that you guys have created and all I can say is it's slicker-n-goose-shit!

    gl


    From: Greg Rudzinski <NoReply_Rudzinski@fer3.com>
    To: garylapook---.net
    Sent: Monday, November 24, 2014 6:51 PM
    Subject: [NavList] Re: Longhand Sight Reduction

    Greg L,
    The 3x5 format is as follows:
    Latitude      L
    Declination  d                                  A                           B
                     L +/- d          Haversine  hv            Haversine hv
                     L +/- d        +Haversine  hv                         +P
                                        1- sum                      Arc Haversine sum
                                                                       Zenith Distance ZD
                     LHA              hv LHA                      Canculated Altitude Hc = 90°-ZD                                  
                                        product P = (1-sum * hv LHA)


     
    Greg Rudzinski
     


       
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