<!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>Off-line Reduction</TITLE> <META NAME="description" CONTENT="Off-line Reduction"> <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="node665.html"> <LINK REL="previous" HREF="node652.html"> <LINK REL="up" HREF="node650.html"> <LINK REL="next" HREF="node656.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html9685" HREF="node656.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html9682" HREF="node650.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html9676" HREF="node654.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html9684" 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="tex2html9686" HREF="node656.html">Bad Pixel Detection and</A> <B> Up:</B> <A NAME="tex2html9683" HREF="node650.html">IRAC2 Online and Off-line</A> <B> Previous:</B> <A NAME="tex2html9677" HREF="node654.html">Online Commands</A> <BR> <BR> <!--End of Navigation Panel--> <H1><A NAME="SECTION003430000000000000000"> </A> <A NAME="irac2:offline-commands"> </A> <BR> Off-line Reduction </H1> The overall approach to IR data reduction is summarized in Figure <A HREF="node655.html#fig:fig_irac2_red">J.3</A> (inspired by a similar diagram in T.M. Herbst's manual for the Calar Alto MAGIC cameras). We shall describe each of these steps below, and indicate the necessary MIDAS routines to achieve them. <P> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <DIV ALIGN="CENTER"><A NAME="fig:fig_irac2_red"> </A><A NAME="32416"> </A> <TABLE WIDTH="50%"> <CAPTION><STRONG>Figure J.1:</STRONG> IR Data Reduction</CAPTION> <TR><TD><IMG WIDTH="652" HEIGHT="743" SRC="img1160.gif" ALT="\begin{figure}\centerline{ \psfig{figure=fig_irac2_red.ps,width=7cm,bbllx=0pt,bblly=0pt,bburx=500pt,bbury=700pt}}\end{figure}"></TD></TR> </TABLE> </DIV> <BR> <P> <BR><HR> <!--Table of Child-Links--> <A NAME="CHILD_LINKS"> </A> <UL> <LI><A NAME="tex2html9687" HREF="node656.html">Bad Pixel Detection and Removal</A> <LI><A NAME="tex2html9688" HREF="node657.html">Construction of Flat Fields</A> <UL> <LI><A NAME="tex2html9689" HREF="node658.html">Standard construction</A> <LI><A NAME="tex2html9690" HREF="node659.html">Alternative construction</A> </UL> <LI><A NAME="tex2html9691" HREF="node660.html">Sky Subtraction</A> <LI><A NAME="tex2html9692" HREF="node661.html">Flat Fielding</A> <LI><A NAME="tex2html9693" HREF="node662.html">Combining Images</A> <LI><A NAME="tex2html9694" HREF="node663.html">Mosaicing</A> <LI><A NAME="tex2html9695" HREF="node664.html">Further Off-line Analysis</A> </UL> <!--End of Table of Child-Links--> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>