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    Noonsite using artificial horizon? Did I do it correctly?
    From: Samuel L
    Date: 2014 Aug 25, 04:53 -0700

    I just got interested, again, in Celestial Navigation and bought a Celestaire Astra III-B

    I did a noon site yesterday using a pan of water for an artificial horizon and need your help and advice in letting me know if I did it correctly. The result obained for Latitude got me within 4' 10" of our actual location.

    In performing the Noon Site I "brought the Sun down" until it was completely superimposed on the Sun reflected from the artificial horizon.

    Noon in my Longitude was 17:04:59 GMT

    Here are the figures;

    Hs using articial horizon- 119 deg 30' (I forgot to read the tenths on the vernier!)

    I divided the Hs reading by 2 to get;

    Hs- 59 deg 45'

    Ie- -4'

    Refraction- +1

    Ho- 60 deg 39'

    Declination  -10 deg 57.3"

    .....what follows is where I think I either made a mistake or didn't make a mistake....

    Sun Semidiameter from the Almanac was 15'.8.....BUT....I wasn't getting the "latitude I wanted" so I divided the SD by 2 and used 7.9'

    So....SD used= 7.9'

    Final Ho was 41 deg 47' 42"

    My actual Latitude was 41 deg 43' 32"

    Any ideas on whether I performed the Noon site correctly?

    Any other suggestions?

    Thank you


     

     

       
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