[ANN] ruby-sphere-0.2.0 for planning astronomical observations

Dear All,

I would like to announce release 0.2.0 of ruby-sphere: a set of
libraries and user interfaces to calculate apparent positions of stars
with a moderate accuracy.

Please have a look at the project homepage
  http://ruby-sphere.sourceforge.net/
and download the package from
  http://prdownloads.sourceforge.net/ruby-sphere/ruby-sphere-0.2.0.tar.gz?download

The goal of ruby-sphere is to provide an easy way to plan astronomical
observations. The second alpha release 0.2.0 includes a command. You
can now edit a simple text file to plot your visibility map.

Best regards,
Daigo

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