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    Re: Eclipse Island's 1766 Eclipse Observation
    From: Peter Blaskett
    Date: 2024 Apr 15, 00:14 -0700

    Jim Wyse.

    Further to the calculation method probably used by Witchell

    See 

    The Theory and Practice of Finding the Longitude at Sea Or Land

    by Mackay. This is available on line.

    https://www.google.com.au/books/edition/The_Theory_and_Practice_of_Finding_the_L/LCAUAAAAQAAJ?hl=en&gbpv=1&dq=mackay+longitude&printsec=frontcover

    In chapter 3, page 167, the article on "Finding longitude by an eclipse of the Sun"

    Mind boggling but workable, and I think this is how Witchell would have used Cook's data.

    Best of luck wading through all this.

       
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