<!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>Introduction</TITLE> <META NAME="description" CONTENT="Introduction"> <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="node266.html"> <LINK REL="previous" HREF="node264.html"> <LINK REL="up" HREF="node264.html"> <LINK REL="next" HREF="node266.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html4744" HREF="node266.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html4741" HREF="node264.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html4735" HREF="node264.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html4743" 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="tex2html4745" HREF="node266.html">Preparing to use the</A> <B> Up:</B> <A NAME="tex2html4742" HREF="node264.html">Planning your observing run</A> <B> Previous:</B> <A NAME="tex2html4736" HREF="node264.html">Planning your observing run</A> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION001831000000000000000"> Introduction</A> </H2> <P> Now suppose you have all the files set up to make MIDAS happy, and you are ready to plan an observing run. The proper distribution of extinction and standard stars was discussed by Young [<A HREF="node307.html#Y74">10</A>]. The program is based on this discussion, but includes other considerations as well (such as the need to measure time-dependent extinction, and to measure instrumental zero-point drifts). It should help you get the right amount of good calibration data with a minimum of observing effort. <P> The command <TT>MAKE/PLAN</TT> will ask questions about what you are trying to do, and produces a schedule of observations that will meet your goals, if possible. If you are trying to do something impossible, it will tell you so, and offer suggestions. In general, if you follow the suggestions of the planning program, you will get the data you need -- assuming that the weather cooperates! <P> The planning program needs to know which photometric system you want to work in, and will try to supply appropriate standard stars. You can provide other table files of standard stars, if you wish; but be sure they really are on the same system as the built-in standards! <P> <HR> <!--Navigation Panel--> <A NAME="tex2html4744" HREF="node266.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html4741" HREF="node264.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html4735" HREF="node264.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html4743" 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="tex2html4745" HREF="node266.html">Preparing to use the</A> <B> Up:</B> <A NAME="tex2html4742" HREF="node264.html">Planning your observing run</A> <B> Previous:</B> <A NAME="tex2html4736" HREF="node264.html">Planning your observing run</A> <!--End of Navigation Panel--> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
