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    More on artificia;l horizons ala davis and mirror type
    From: Alan S
    Date: 2012 Mar 22, 16:40 -0700

    Possibly it all revolves around the fact that I haven't had all that much practice doing sun shots with artificial horizons Of course, it could be something else, for instance the position of Mars or something like that, however the following is what I've gotten the last couple of days.

    Using a Davis AH, either sitting on the ground or set on a dining chair, about 18" high (450mm for those of metric persuasion, I get reasonable shots, without particular difficulty.

    Using a mirror AH, a home made assembly, one that is likely on the crude side, this assembly set on the ground and leveled, the thing doesn't seem willing to work, I can find the "mirror" sun, though as for the sextant sun, while I know it is there, I know not where. Placeing this assembly on the previously mentioned dining chair, after leveling the unit, I'm able to get sun shots, the mirror sun being pretty obvious, though the sextant sun is less easily found and held, the problem being, as we used to describe regarding long range rifle shooting, one of windage, that is left/right positioning of the sextant sun with respect to the mirror sun. Finding the sextant sun with my mirror AH seems trickier than with the Davis AH.

    Such might be the slings and arrows that are part of being a "landlocked navigator". Lest I forget, thanks to those who have tried to keep mre straight on this business.

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