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<sect1 id="tool-calculator">
<title
>The Astrocalculator</title>
<indexterm
><primary
>Tools</primary>
<secondary
>Astrocalculator</secondary>
</indexterm>

<para
>The &kstars; Astrocalculator provides several modules that give you direct access to algorithms used by the program. The modules are organised by subject: <itemizedlist
><title
>Coordinate Converters</title>
<listitem
><para
><link linkend="calc-angdist"
>Angular Distance</link
></para
></listitem>
<listitem
><para
><link linkend="calc-apcoords"
>Apparent Coordinates</link
></para
></listitem>
<listitem
><para
><link linkend="calc-ecliptic"
>Ecliptic Coordinates</link
></para
></listitem>
<listitem
><para
><link linkend="calc-eqgal"
>Equatorial/Galactic Coordinates</link
></para
></listitem>
<listitem
><para
><link linkend="calc-horiz"
>Horizontal Coordinates</link
></para
></listitem>
<listitem
><para
><link linkend="calc-precess"
>Precession</link
></para
></listitem>
</itemizedlist>
<itemizedlist
><title
>Earth Coordinates</title>
<listitem
><para
><link linkend="calc-geodetic"
>Geodetic Coordinates</link
></para
></listitem>
</itemizedlist>
<itemizedlist
><title
>Solar System</title>
<listitem
><para
><link linkend="calc-planetcoords"
>Planets Coordinates</link
></para
></listitem>
</itemizedlist>
<itemizedlist
><title
>Time Calculators</title>
<listitem
><para
><link linkend="calc-dayduration"
>Day Duration</link
></para
></listitem>
<listitem
><para
><link linkend="calc-equinox"
>Equinoxes and Solstices</link
></para
></listitem>
<listitem
><para
><link linkend="calc-julian"
>Julian Day</link
></para
></listitem>
<listitem
><para
><link linkend="calc-sidereal"
>Sidereal Time</link
></para
></listitem>
</itemizedlist>
</para>
&calc-angdist; &calc-apcoords; &calc-ecliptic; &calc-eqgal; &calc-horiz; &calc-precess; &calc-geodetic; &calc-planetcoords; &calc-dayduration; &calc-equinox; &calc-julian; &calc-sidereal; </sect1>