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    Re: Running down an Astro-Position Line
    From: Adrian F
    Date: 2021 Mar 14, 10:10 -0700

    As requested by David Pike on 13 March, attached are further pages from part 4 of The Observer's Book on Astro-Navigation by Francis Chichester, published in 1942.

    Chapter 27 in that book, "Running Down a Position Line", consists of :

    • pages 23-30, attached to this post
    • pages 31-32 plus the fold-out chart plus page 33, all posted here on 5 March 2021
    • pages 34-35, attached to this post

    The preceding chapter 26 ("The Flying Boat Sextant") ends at page 22, and the following chapter 28 ("Errors due to Flight Accelerations") starts at page 36.  I hope the attached pages help (though I'm not expert enough to be able to judge that).

    Regards,  Adrian F

     

    File:
    Pgs-23-30-34-35-of-part-4-Obs-book.pdf
       
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