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<sect2 id="calc-ecliptic">
<title>Ecliptic Coordinates module</title>
<indexterm><primary>Tools</primary>
<secondary>Astrocalculator</secondary>
<tertiary>Ecliptic Coordinates module</tertiary>
</indexterm>
<screenshot>
<screeninfo>
The Ecliptic Coordinates calculator module
</screeninfo>
<mediaobject>
<imageobject>
<imagedata fileref="calc-ecliptic.png" format="PNG"/>
</imageobject>
<textobject>
<phrase>Ecliptic Coordinates</phrase>
</textobject>
</mediaobject>
</screenshot>
<para>
This module converts between <link linkend="equatorial">Equatorial
coordinates</link> and <link linkend="ecliptic">Ecliptic
coordinates</link>. First, select which coordinates
should be taken as input values in the <guilabel>Choose Input
Coordinates</guilabel> section. Then, fill in the corresponding
coordinate values in either the <guilabel>Ecliptic
coordinates</guilabel> or <guilabel>Equatorial coordinates</guilabel>
section. Finally, press the <guibutton>Compute</guibutton> button,
and the complementary coordinates will be filled in.
</para>
<para>
The module contains a batch mode for converting several coordinate
pairs at once. You must construct an input file in which each line
contains two values: the input coordinate pairs (either Equatorial
or Ecliptic). Then specify which coordinates you are using as input,
and identify the input and output filenames. Finally, press the
<guibutton>Run</guibutton> button to generate the output file,
which will contain the converted coordinates (Equatorial or
Ecliptic; the complement of what you chose as the input values).
</para>
</sect2>
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