<!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>Order Definition: Methods STD and COM</TITLE> <META NAME="description" CONTENT="Order Definition: Methods STD and COM"> <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="node471.html"> <LINK REL="previous" HREF="node469.html"> <LINK REL="up" HREF="node469.html"> <LINK REL="next" HREF="node471.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html7319" HREF="node471.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html7316" HREF="node469.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html7310" HREF="node469.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html7318" 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="tex2html7320" HREF="node471.html">Order definition: Method Hough</A> <B> Up:</B> <A NAME="tex2html7317" HREF="node469.html">Reduction using Standard Stars</A> <B> Previous:</B> <A NAME="tex2html7311" HREF="node469.html">Reduction using Standard Stars</A> <BR> <BR> <!--End of Navigation Panel--> <H3><A NAME="SECTION0027101100000000000000"> Order Definition: Methods STD and COM</A> </H3> <P> If <TT>DEFMTD</TT> is set to <TT>STD or COM</TT>, <TT>WIDTH1</TT> is the width of a single echelle order. To find this value load the <TT>ORDREF</TT> on the display using <TT>LOAD/IMAGE</TT> and use for example the commands <TT>GET/CURSOR</TT> or <TT>EXTRACT/TRACE</TT> and <TT>PLOT/IMAGE TRACE</TT>. A superior method which will be needed later in the reduction any way is to extract a column and to produce a plot on the hardcopy device. Let <TT>x</TT> be a column somewhere in the middle of the frame. The following sequence of commands will do the job: <BLOCKQUOTE> <TT>SET/PLOT BIN=ON <BR> PLOT/COL ima @x <BR> SEND/PLOT ps2usr0</TT></BLOCKQUOTE> <P> The default method for <TT>DEFINE/ECHELLE</TT> is <TT>STD</TT>. However, it happens that the order definition procedure mixes order and inter-order: this is likely to occur in the blue where the order spacing becomes less than the width of each order. Set the parameter <TT>DEFMTD=COM</TT> <P> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
