Next message: Marcel E. Tschudin: "Re: Refraction"
Marcel,
OK, I got it. Ignore my last post. You might want to look at the
Introduction to the Air Almanac, which should give instructions for its
use, and should discuss this case. I've never seen a bubble sextant,
so I don't know whether they measure negative altitudes.
Fred
On Aug 4, 2005, at 12:20 PM, Marcel E. Tschudin wrote:
> Yes, how do I get in this? Just trying to cover in a self-made program
> the
> situation from an object at the horizon (over sea level) as seen from a
> mountain or air craft.
