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    Re: Whole Horizon Mirror vs. Split Horizon Mirror
    From: Tom Sult
    Date: 2015 Nov 24, 15:28 -0600
    And this would "mirrors" my experience. I have 2 Tamara one with whole and one with split. I trained on the whole and loved it. Then found the split was better for me all around. When learning the whole horizon mirror has fewer things to think about. Just get both things on the mirror (target and horizon). With the split it matters were on the mirror. 

    Tom Sult, MD
    Author: JUST BE WELL

    On Nov 24, 2015, at 15:15, Frank Reed <NoReply_FrankReed@fer3.com> wrote:

    Stan, you quoted from John Karl's book:
    "the whole-horizon mirror makes easy sights easier, and hard sights harder."

    Yes, indeed, that's in his book, but he's not indicating his source for that pithy summary. John Karl is quoting David Burch, apparently without credit (naughty, naughty! ...but these things happen innocently in a field like celestial navigation). Burch's version reads:
      "full-view mirrors make the easy sights easier, and the hard sights harder".
    In fact, David Burch's article on this issue forms the basis for John Karl's entire section on this topic (see below). To read Burch's original article, download volume 4 of his compilation of issues of the Navigator's Newsletter here, and go to issue 91, pages 8-9.

    At first I wasn't sure which version came first, John's or David's version of this "pithy summary". But the very next item in that issue of the Navigator's Newsletter is a notice announcing the first celestial navigation conference that I organized at Mystic Seaport back in 2006. Ken Gebhart had convinced John Karl to attend since he was still writing his book. I remember talking to John after my lunars presentation, and the book was getting close but it was not done. So that's the order: David Burch said it first.

    For everyone's further reading pleasure, here are links to the four compilations of all issues of the Navigator's Newsletter:
    Volume 1 Issues 1-31
    Volume 2 Issues 32-61
    Volume 3 Issues 62-88
    Volume 4 Issues 89-99

    Frank Reed
    Conanicut Island USA

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