<!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>Creation of the Instrumental Function</TITLE> <META NAME="description" CONTENT="Creation of the Instrumental Function"> <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="node188.html"> <LINK REL="previous" HREF="node186.html"> <LINK REL="up" HREF="node184.html"> <LINK REL="next" HREF="node188.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html3763" HREF="node188.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html3760" HREF="node184.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html3754" HREF="node186.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html3762" 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="tex2html3764" HREF="node188.html">Creation of the Input</A> <B> Up:</B> <A NAME="tex2html3761" HREF="node184.html">Typical Run</A> <B> Previous:</B> <A NAME="tex2html3755" HREF="node186.html">Initialisation of the Keywords</A> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION001333000000000000000"> Creation of the Instrumental Function</A> </H2> <P> The command <TT>CREATE/PSF</TT> creates a 1D image of a normalized gaussian centered in 0. <P><P> <BR> Command: <DIV ALIGN="CENTER"> <!-- MATH: $\fbox{\tt CREATE/PSF NAMEP FWMM}$ --> <IMG WIDTH="207" HEIGHT="31" ALIGN="BOTTOM" BORDER="0" SRC="img385.gif" ALT="\fbox{\tt CREATE/PSF NAMEP FWMM}"></DIV> <P><P> <BR> <PRE><TT> NAMEP : output image <BR> FWMM : full width at half maximum of the instrumental response (Å) <BR> </TT></PRE>The stepsize is specified by the keyword CLDDIM. <P> This image is to be used by the command <TT>COMPUTE/ABS</TT>; any other (non gaussian) <TT>PSF</TT> can be used provided it is centered in 0, normalised and has the same step size as the synthetic image. <P><P> <BR> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>