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    Re: Mirror artificial horizon finally working
    From: Bill B
    Date: 2014 Apr 24, 13:43 -0400

    On 4/23/2014 7:31 PM, Sean C wrote:
    > It didn't work too well, either. If I put it at the top, not enough air
    > got in to evaporate the droplets. If I put it at the bottom, too much
    > air got in and the surface was disturbed.
    
    Could you drill a couple of *small* holes near the top and bottom
    corners and sides of the plates without upsetting the apple cart?
    
    Perhaps fooling myself, but I cut and mounted dull black plastic (from a
    notebook cover) on the bottom inside of my Davis AH tray and it seems to
    help a bit with star sights using water as the liquid. Note that
    glycerine is water soluble for easy cleanup, and should increase surface
    tension if memory serves (hence its use in bubble-blowing solutions.)
    
    The real secret is to keep the AH in the shade while doing sun
    observations :-)
    
    
    
    

       
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