<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 98.1p1 release (March 2nd, 1998) originally by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Horizon tables</TITLE> <META NAME="description" CONTENT="Horizon tables"> <META NAME="keywords" CONTENT="vol2"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <LINK REL="STYLESHEET" HREF="vol2.css"> <LINK REL="next" HREF="node262.html"> <LINK REL="previous" HREF="node260.html"> <LINK REL="up" HREF="node253.html"> <LINK REL="next" HREF="node262.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html4697" HREF="node262.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html4694" HREF="node253.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html4688" HREF="node260.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html4696" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html4698" HREF="node262.html">Instrument file</A> <B> Up:</B> <A NAME="tex2html4695" HREF="node253.html">Getting started</A> <B> Previous:</B> <A NAME="tex2html4689" HREF="node260.html">Observatory table</A> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION001823000000000000000"> Horizon tables</A> </H2> Every telescope needs a horizon table, which tells where the telescope can look in the sky, and also from which parts of the sky the Moon can shine on the objective. Without a horizon table, the programs will assume that the telescope has an unobstructed view of the horizon -- an assumption that is probably wrong. The name of the table is keyed to the name of the telescope; see the Appendix. <P> If you need to make up a new table, the command <TT>MAKE/HORFORM</TT> will provide you with a form to fill in while gathering the data, which can then be entered into the empty table provided. <P> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>