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    Re: more on artificia;l horizons ala davis and mirror type
    From: Alexandre Eremenko
    Date: 2012 Mar 22, 20:55 -0400

    Alan,
    
    1. What is the size of your mirror AH? Is it much smaller than the Davis?
    2. Have you tried my advise to remove the telescope?
    3. Just for the case, wear sunglasses.
    
    Alex.
    
    On Thu, 22 Mar 2012, Alan S wrote:
    
    >
    > 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.
    >
    > Alan
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