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    Re: Full moon sights and lifeboat sextant accuracy
    From: Greg Rudzinski
    Date: 2017 Oct 7, 11:13 -0700

    Attached are Moon and Sun observation sets for C&P vs. Davis MK 3 using a H2O liquid artificial horizon. Results are about what was expected. 

    Greg Rudzinski

    From: Greg Rudzinski
    Date: 2017 Oct 6, 17:53 -0700

    Bruce,

    The liquid artificial horizon cuts the systematic errors in half so that the actual natural horizon intercepts due to systematic errors are going to be double that observed in the artificial horizon. I have three metal sextants (Tamaya Jupiter, C&P, and US Navy M,Low) that will all be at 1' intercepts or better using a x4 scope on the liquid artificial horizon. Making observations on a natural horizon from a sailboat cockpit will be a different story. 3' intercepts would then be concidered good if using a metal sextant.

    Greg Rudzinski

    PS I'll do a set of 10 observations each for you tomorrow. C&P with x4 scope vs. Davis MK 3 with sight tube (using a liquid artificial horizon).



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