<sect2 id="calc-eqgal">
<title>Equatorial/Galactic Coordinates module</title>
<indexterm><primary>Tools</primary>
<secondary>Astrocalculator</secondary>
<tertiary>Equatorial/Galactic Coordinates module</tertiary>
</indexterm>

<screenshot>
<screeninfo>
The Equatorial/Galactic Coordinates calculator module
</screeninfo>
<mediaobject>
  <imageobject>
    <imagedata fileref="calc-eqgal.png" format="PNG"/>
  </imageobject>
  <textobject>
    <phrase>Equatorial/Galactic Coordinates</phrase>
  </textobject>
</mediaobject>
</screenshot>

<para>
This module converts from <link linkend="equatorial">Equatorial 
coordinates</link> to <link linkend="galactic">Galactic 
coordinates</link>, and vice versa.  First, select which coordinates 
should be taken as input values in the <guilabel>Input 
Selection</guilabel> section.  Then, fill in the corresponding 
coordinate values in either the <guilabel>Galactic 
coordinates</guilabel> or <guilabel>Equatorial coordinates</guilabel>
section.  Finally, press the <guibutton>Compute</guibutton> button,
and the complementary coordinates will be filled in.
</para>
</sect2>