<!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>Character descriptor FILTCAT</TITLE> <META NAME="description" CONTENT="Character descriptor FILTCAT"> <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="node618.html"> <LINK REL="previous" HREF="node616.html"> <LINK REL="up" HREF="node614.html"> <LINK REL="next" HREF="node618.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html9229" HREF="node618.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html9226" HREF="node614.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html9220" HREF="node616.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html9228" 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="tex2html9230" HREF="node618.html">Character descriptor FILTSTAT</A> <B> Up:</B> <A NAME="tex2html9227" HREF="node614.html">Instrument descriptors</A> <B> Previous:</B> <A NAME="tex2html9221" HREF="node616.html">Descriptor NFILTCAR</A> <BR> <BR> <!--End of Navigation Panel--> <H3><A NAME="SECTION003254300000000000000"> Character descriptor FILTCAT</A> </H3> If curves are available for the filters used, this holds the name of a MIDAS catalog file that points to individual table files, which in turn hold the transmission data. <P> The individual filter table files should give transmittance (column name TRANS) as a function of wavelength in nanometers (column name LAMBDA). Each filter's table file should contain a character descriptor named <B>BAND</B> that names the passband for which that filter is used. <P> If no filter curves are available, <B>FILTCAT</B> should contain only spaces. <P> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
