<!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>Table file output</TITLE> <META NAME="description" CONTENT="Table file output"> <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="node290.html"> <LINK REL="up" HREF="node286.html"> <LINK REL="next" HREF="node292.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html5064" HREF="node292.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html5061" HREF="node286.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html5057" HREF="node290.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html5063" 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="tex2html5065" HREF="node292.html">Interpreting the output</A> <B> Up:</B> <A NAME="tex2html5062" HREF="node286.html">Final results</A> <B> Previous:</B> <A NAME="tex2html5058" HREF="node290.html">Logfile output</A> <BR> <BR> <!--End of Navigation Panel--> <H3><A NAME="SECTION001857500000000000000"> Table file output</A> </H3> The individual data, reduced as described above, are put into a simple output table file named ``results.tbl''. Its columns give both MJD and heliocentric Julian Date (minus 2400000); the name of the object; the band; and the corresponding standard magnitude. This makes the results of the reductions available for further processing with MIDAS utilities. <P> For example, although the table entries are written in the same order they are printed in the logfile (star by star, so that the necessary color data are adjacent), they can be rearranged into chronological order, or by passband, with the <TT>SORT/TABLE</TT> command. Columns can be extracted to a new table, using <TT>PROJECT/TABLE</TT>. You could interpolate the values of a comparison star to every time in the table by using <TT>FIT/TABLE</TT> or <TT>REGRESS/TABLE</TT>, and then use <TT>COMPUTE/TABLE</TT> to subtract these from the values for a variable star to produce differential photometry. <P> Additional columns could be transferred from the original data to the new table, using <TT>PROJECT/TABLE</TT> and <TT>JOIN/TABLE</TT> or <TT>MERGE/TABLE</TT>, so that correlations and effects not looked for by the reduction program can be detected. In general, because the PEPSYS package makes heavy use of table files, the user should try to become familiar with the utilities MIDAS provides to deal with them. <P> <HR> <!--Navigation Panel--> <A NAME="tex2html5064" HREF="node292.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html5061" HREF="node286.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html5057" HREF="node290.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html5063" 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="tex2html5065" HREF="node292.html">Interpreting the output</A> <B> Up:</B> <A NAME="tex2html5062" HREF="node286.html">Final results</A> <B> Previous:</B> <A NAME="tex2html5058" HREF="node290.html">Logfile output</A> <!--End of Navigation Panel--> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
