Sure. Send to rvdb
at
princeton.
edu
On Jul 22, 2010, at 10:58 AM, luzius.thuerlemann wrote:
> Thank you Robert for this post. The last lines describe my project well. I
> tried to measure the time when the moon is just completely above or below the
> horizon and then look in the Alt/Az-coordinates for the information I need in
> the horizon creation file. Then I'd subtract the radius of the moon - about
> 15' - from the moons altitude (probably it's center) to get the horizon
> altitude where he just rose above. And it's the other way round to find out
> the altitude of the horizon where he just set - meaning adding the moons
> radius to the moons center altitude to get the horizon 15' above the moon. Of
> course it's not that precise - especially when it's waxing moon and I can't
> see when he just rises above or sets below the horizon. But with wanning moon
> or better full moon it works. And also it's not that precise because of the
> changing distances of the moon, and because one can only simulate whole
> altitude degrees instead of minutes and even seconds. But within the range of
> whole altitude degrees this measuring method should really do - I mean, a
> degree is twice the moons diameter or four times the moons radius! It really
> should work.
> But it doesn't.
> Can I send you some print screens?
Robert J. Vanderbei
Princeton University
http://www.princeton.edu/~rvdb
"There are 10 types of people, those who understand binary and those who don't"
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