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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>
+