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    Re: Afternoon Sight
    From: David C
    Date: 2021 Jan 10, 13:12 -0800

    David P wrote

    It was the first time after lunch you could take it without your index arm doing the 'splits'?

    Correct. It was also the highest sun altitude I have observed.

    H   127° 02'

      IC          -4

    126°   58'

    /2   63  29°

    +         15.7'

    Ho  63°  44.7'

    GHA   205°   38.4'


            206°  13.7'

    long  175°   05.2'

    LHA  381  18.9'

    t     21°  18.9'

    Using  a calculator and the cos formula   Hc   63°  44.2.

    I was suprised at how quickly the sun moves in the mid afternoon. I set the sextant to maximum and thought I had about 15 minutes until the images touched. I decided to see if  both images were visible so casually picked up the sextant. Not only could I see both images but they were a sun's diameter apart!!!!!  I continued observing and within a few minute the limbs touched.

    Is there any combination of optics that could be used to take a noon sight at this time of year at lat 41S  with an AH?


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