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    Re: Confidence in Moonsights
    From: Paul Hirose
    Date: 2022 Oct 16, 15:44 -0700

    On 10/14/2022 10:30 AM, Andrés Ruiz wrote:
    > Once I  obtained better results with a Link
    > A-12 aircraft bubble sextant than with two marine sextants, ASTRA and
    > C&P. Why? Because the Moon was nearly full and the glare in the horizon
    > made it very difficult to kiss it.
    The C&P Horizon Ultra sextant has a "Schüler double prism" which reduces
    Sun glare on the water. It also shows a discontinuity in the horizon
    when the sextant is not perpendicular. I suppose the device would also
    work for Moon observations.
    
    https://shop.cassens-plath.de/en/sextants/sextants/19/horizon-ultra#361857e02c1bb199398caa5ec1a3be5a
    
    
    Regarding Antoine's "Due to the significant Moon parallax, 3D
    corrections are required because the Earth is not a perfect sphere," my
    Lunar program does account for that. It also recommends the correct
    limbs (upper or lower, near or far), but accepts an observation of the
    wrong limb.
    
    --
    Paul Hirose
    sofajpl.com
    
    

       
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