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1 <sect2 id="calc-ecliptic">
2 <title>Ecliptic Coordinates module</title>
3 <indexterm><primary>Tools</primary>
4 <secondary>Astrocalculator</secondary>
5 <tertiary>Ecliptic Coordinates module</tertiary>
6 </indexterm>
8 <screenshot>
9 <screeninfo>
10 The Ecliptic Coordinates calculator module
11 </screeninfo>
12 <mediaobject>
13   <imageobject>
14     <imagedata fileref="calc-ecliptic.png" format="PNG"/>
15   </imageobject>
16   <textobject>
17     <phrase>Ecliptic Coordinates</phrase>
18   </textobject>
19 </mediaobject>
20 </screenshot>
22 <para>
23 This module converts between <link linkend="equatorial">Equatorial
24 coordinates</link> and <link linkend="ecliptic">Ecliptic
25 coordinates</link>.  First, select which coordinates
26 should be taken as input values in the <guilabel>Choose Input
27 Coordinates</guilabel> section.  Then, fill in the corresponding
28 coordinate values in either the <guilabel>Ecliptic
29 coordinates</guilabel> or <guilabel>Equatorial coordinates</guilabel>
30 section.  Finally, press the <guibutton>Compute</guibutton> button,
31 and the complementary coordinates will be filled in.
32 </para>
33 <para>
34 The module contains a batch mode for converting several coordinate
35 pairs at once.  You must construct an input file in which each line
36 contains two values: the input coordinate pairs (either Equatorial
37 or Ecliptic).  Then specify which coordinates you are using as input,
38 and identify the input and output filenames.  Finally, press the
39 <guibutton>Run</guibutton> button to generate the output file,
40 which will contain the converted coordinates (Equatorial or
41 Ecliptic; the complement of what you chose as the input values).
42 </para>
43 </sect2>