Astronomy--Programs to Compute Siderial Time?

[Roy Smith]

In article <hi2o39$hm0$1 at news.eternal-september.org>,
 "W. eWatson" <wolftracks at invalid.com> wrote:

> Is there a smallish Python library of basic astronomical functions? 
> There are a number of large such libraries that are crammed with 
> excessive functions not needed for common calculations.

FWIW, if you have any interest in this kind of stuff, you must read the 
classic book on the subject:

http://www.amazon.com/Astronomical-Formulae-Calculators-Jean-Meeus/dp/094339
6220

This is not some textbook which takes graduate level physics to understand.  
It's a straight-forward primer for people who want to use calculators to 
compute phase of the moon and stuff like that.