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    Re: Backyard winter sextant observatory?
    From: Frank Reed
    Date: 2005 Apr 19, 19:24 EDT
    Jim you wrote:
    "My thought is to put a plexiglass dome in the roof of a small, lightweight, insulated structure"
     
    There would be significant refraction. The old air navigation tables had a table for a type of standard dome, but you would need to measure the correction at various altitudes and it would require mounting the sextant in a fixed position. At best you might get angles accurate to the nearest two or three minutes or arc. Maybe you should invest in a good winter coat and some mittens instead <g>. All kidding aside, I have a pair of gloves with open fingers that make winter sights bearable.
     
    -FER
    http://www.HistoricalAtlas.com/lunars
       
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