<!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>A Case with some Bad Columns</TITLE> <META NAME="description" CONTENT="A Case with some Bad Columns"> <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="previous" HREF="node451.html"> <LINK REL="up" HREF="node450.html"> <LINK REL="next" HREF="node453.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html7077" HREF="node453.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html7074" HREF="node450.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html7070" HREF="node451.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html7076" 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="tex2html7078" HREF="node453.html">CCD-Commands Summary</A> <B> Up:</B> <A NAME="tex2html7075" HREF="node450.html">Examples and Hints</A> <B> Previous:</B> <A NAME="tex2html7071" HREF="node451.html">The Simplest Case</A> <BR> <BR> <!--End of Navigation Panel--> <H3><A NAME="SECTION002519200000000000000"> A Case with some Bad Columns</A> </H3> <P> In this case, we have the same frames available as in the previous example, but now we want to correct for bad columns. We first show how to do this interactively and then how to do it using a table.<BLOCKQUOTE> <TT>AVERage/IMAge DARKAV = DARK01,DARK02,DARK03,DARK04 <BR> AVERage/IMAge FLATAV = FLATR1,FLATR2,FLATR3 <BR> $ COPY MID$DISK:[SYSMIDAS.PROC]BADCOL.TBL *.* <BR> MODIfy/COLumn FLATAV,BADCOL FLATAV2 C <BR> MODIfy/COLumn DARKAV,BADCOL DARKAV2 C <BR> COMPute/IMAge DENOM = FLATAV2-DARKAV2 <BR> COMPute/IMAge N5126RF = (N5126R-DARKAV2)/DENOM <BR> COMPute/IMAge N7794RF = (N7794R-DARKAV2)/DENOM <BR> MODIfy/COLumn N5126RF,BADCOL CLR5126 C <BR> MODIfy/COLumn N7794RF,BADCOL CLR7794 C</TT></BLOCKQUOTE>This example is like the previous one except that this time, the average dark and average flat fields are corrected for low sensitivity columns and the final data frames also. The table <TT>BADCOL</TT> contains the list of low sensitivity columns which are to be corrected. <P> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
