<!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>Retrieving demonstration and calibration data</TITLE> <META NAME="description" CONTENT="Retrieving demonstration and calibration data"> <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="node501.html"> <LINK REL="previous" HREF="node498.html"> <LINK REL="up" HREF="node497.html"> <LINK REL="next" HREF="node501.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html7697" HREF="node501.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html7694" HREF="node497.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html7688" HREF="node499.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html7696" 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="tex2html7698" HREF="node501.html">A Typical Session: Cook-book</A> <B> Up:</B> <A NAME="tex2html7695" HREF="node497.html">Reduction of Long Slit</A> <B> Previous:</B> <A NAME="tex2html7689" HREF="node499.html">Purpose</A> <BR> <BR> <!--End of Navigation Panel--> <H1><A NAME="SECTION003020000000000000000"> Retrieving demonstration and calibration data</A> </H1> <P> Calibration tables are required to provide reference values of wavelength for Th-Ar arc lamp lines, atmospheric extinction or standard star fluxes. <P> A certain number of tables are distributed on request in complement to the Midas releases. These tables are also available on anonymous ftp at the host <B>ftphost.hq.eso.org</B> (IP number 134.171.40.2). The files to be retrieved are located in the directory /midaspub/calib and are named README.calib and calib.tar.Z. Command <TT>SHOW/TABLE</TT> can be used to visualize the column name and physical units of the tables. Demonstration data required to execute the tutorial procedure <TT>TUTORIAL/ECHELLE</TT> are also located on this ftp server in the directory /midaspub/demo as echelle.tar.Z. FTP access is also provided on the World Wide Web URL: <DIV ALIGN="CENTER"> <B>http://http.hq.eso.org/midas-info/midas.html</B> </DIV> The calibration directory contains other information such as characteristic curves for ESO filters and CCD detectors, which can be visualized with the Graphical User Interface XFilter (command <TT>CREATE/GUI FILTER</TT>). <P> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
