Next message: Frank R: "Re: Backyard winter sextant observatory?"
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
