<!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 merging</TITLE> <META NAME="description" CONTENT="Order merging"> <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="node707.html"> <LINK REL="previous" HREF="node705.html"> <LINK REL="up" HREF="node696.html"> <LINK REL="next" HREF="node707.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html10308" HREF="node707.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html10305" HREF="node696.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html10299" HREF="node705.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html10307" 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="tex2html10309" HREF="node707.html">Description of FEROS keywords</A> <B> Up:</B> <A NAME="tex2html10306" HREF="node696.html">FEROS</A> <B> Previous:</B> <A NAME="tex2html10300" HREF="node705.html">Rebinning</A> <BR> <BR> <!--End of Navigation Panel--> <H1><A NAME="SECTION0037100000000000000000"> Order merging</A> </H1> <P> >From the rebinned quasi 2-D spectra, individual orders can be extracted in individual files or all orders can be merged in a single 1-D spectrum. In the latter case, the spectra are averaged in the overlapping regions. The edges of the orders containing too little signal have to be removed before the averaging. This is especially important for FEROS, since the blue orders are much shorter than the CCD. A table with the limits of the orders is supplied for FEROS spectra. The corresponding command is MERGE/FEROS. <P> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
