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    Re: Making an artificial horizon, and leveling thereof
    From: Alan S
    Date: 2011 Jan 21, 20:55 -0800

    George:

    You wrote, This list thrives on numbers, Alan. Without numbers, even approximate ones,a statement such as "show quite small displacement" has no meaning to anyone other than you.

    Duly noted.Omitting numbers was an oversight on my part. On displacement of calculated fix from GPS coordinates, many under 3 NM, a few around 1 NM, with a couple under 1 NM. Of course, there were some "wild hairs" which I attribute to "operator error", yours truly being the operator.

    You also asked , "And why do you need to stand back to see the two views?" I really don't know, just that it seemed that there was an optimum distance from which I could see both the reflected and sextant suns, this seeming to be back from the AH, rather than closer to it.

    As to alignment, I'm just going on the basis of the instruction sheet that came with the thing, which stated that the ah should be oritned so that there was no shadow at either side.

    Best.

    Alan
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