Re: Moon?

Paul Rubin <http://phr.cx@xxxxxxxxxxxxxx> writes:

> "Jan Böhme" <jan.bohme@xxxxx> writes:
>> Yes. But the earth revolves 360 degrees in 24 hours, or 15 arcsec per
>> clock second. If one wants to use just one angular velocity as an
>> approximation for celestial motion, this would surely be the one.
>
> The idea is that the telescope's clock drive also runs at that speed,
> so stars stay stationary in the telescope field. What's left is the
> moon's motion in its orbit.

Don't forget the error in the telescope drive. For anything
affordable it is likely to be greater than the orbital motion of the
moon.

--
Måns Rullgård
mru@xxxxxxxxxxxxx
.

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