<!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>echelle</TITLE> <META NAME="description" CONTENT="echelle"> <META NAME="keywords" CONTENT="vol1"> <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="vol1.css"> <LINK REL="next" HREF="node155.html"> <LINK REL="previous" HREF="node153.html"> <LINK REL="up" HREF="node150.html"> <LINK REL="next" HREF="node155.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html2529" HREF="node155.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html2525" HREF="node150.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html2519" HREF="node153.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html2527" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <A NAME="tex2html2528" HREF="node216.html"> <IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="icons.gif/index_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html2530" HREF="node155.html">irac2</A> <B> Up:</B> <A NAME="tex2html2526" HREF="node150.html">Standard Reduction Commands</A> <B> Previous:</B> <A NAME="tex2html2520" HREF="node153.html">do</A> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION001534000000000000000"> </A> <A NAME="echelle"> </A> <BR> echelle </H2> <BLOCKQUOTE> <TT><TT>AVERAGE/TABLE <I>frame table xy_col outcol [size] <BR> </I> </TT></TT>Read pixels in a frame at positions defined by a table. <BR> <TT>BACKGROUND/ECHELLE <I>in out [radx,rady,step] [degree] [smooth] [method] <BR> </I> </TT>estimate interorder scattered light of an echelle spectrum <BR> <TT>BACKGROUND/SMOOTH <I>input output [radx,rady] [niter] [visu] <BR> </I> </TT>estimate interorder scattered light of an echelle spectrum <BR> <TT>CALIBRATE/ECHELLE <I>[defmtd] [wlcmtd] <BR> </I> </TT>performs order definition and wavelength calibration <BR> <TT>CLEAN/ECHELLE <BR> </TT>Clears contexts Echelle and Spec and removes process tables <BR> <TT>CONVERT/ECHELLE <I>input output domain function param option <BR> </I> </TT>resample echelle orders <BR> <TT>DEFINE/ECHE <I>[ordref] [width1,thres1,slope] [defmtd] [defpol] <BR> </I> </TT>define echelle order positions <BR> <TT>DEFINE/HOUGH <I>[ordref] [nbord] [hwid] [hough_par] [thresh] [degx,degy] <BR> </I> <I>[hot_thres,step] [hough_setup] <BR> </I> </TT>define echelle order positions; automatic detection by Hough transform. <BR> <TT>DEFINE/SKY <I>ima [nsky] [possky] [half_width] <BR> </I> </TT>defines limits of the sky windows <BR> <TT>DISPLAY/ECHELLE <I>image [g_flag] <BR> </I> </TT>Optionally creates a display and graphic windows and scales an <BR> image to be displayed. <BR> <TT>ERROR/ECHELLE <I>command keyword <BR> </I> </TT>Low-level error message generator for the echelle package <BR> <TT>EXTR/ECH <I>input output [params] [method] <BR> </I> </TT>extract echelle orders <BR> <TT>EXTR/OPT <I>input output slit,ord1,ord2 [ron,g,sigma] [table] [coeffs] <BR> </I> </TT>weigthed extraction of echelle orders <BR> <TT>EXTRACT/ORDER <I>inp out sl,ang,off meth table coeff [ord1,ord2] <BR> </I> </TT>Extract echelle orders and produces a frame in space pixel-order <BR> <TT>EXTRACT/SKY <I>in out [mode] <BR> </I> </TT>Extracts sky spectrum. <BR> <TT>FILTER/ECHELLE <I>input output <BR> </I> </TT>filter echelle frame for cosmic ray hits and subtract background <BR> <TT>FLAT/ECHELLE <I>[flat] [correct] [blaze] <BR> </I> </TT>subtract background from flat-field image and approximate blaze profile <BR> <TT>HELP/ECHELLE <I>keyword [mode] <BR> </I> </TT>Provides short help on an echelle session keyword <BR> <TT>HOUGH/ECHELLE <I>input [scan] [step,nbtr] [nbord] [flags] [hwid] [thres] [params] <BR> </I> </TT>perform Hough transform and orders detection on a flat-field frame <BR> <TT>IDENT/ECHEL <I>[wlc] [lincat] [dc] [tol] [wlcloop] [wlcmtd] <BR> </I> <I>[guess,[shift]] [ccdbin] <BR> </I> </TT>perform wavelength calibration of echelle spectra <BR> <TT>INIT/ECHELLE <I>[name] <BR> </I> </TT>initializes echelle parameters <BR> <TT>INITIAL/EMMI <I>[ref] [grism] <BR> </I> </TT>Initializes the Echelle context for a given EMMI <I>configuration <BR> </I> <TT>KEYDEL/ECHELLE <I>[table] <BR> </I> </TT>Deletes echelle session keywords <BR> <TT>LOAD/CALIBRATION <BR> </TT>display wavelength calibration result <BR> <TT>LOAD/ECHELLE <BR> </TT>display echelle orders (and optionally background) positions <BR> <TT>LOAD/IDENTIFICATION <BR> </TT>display initial identifications. <BR> <TT>LOAD/SEARCH <BR> </TT>Loads on display the position of the lines found by the <BR> SEARCH/ECHELLE <I>command. <BR> </I> <TT>MERGE/ECHELLE <I>inframe outframe [params] [method] <BR> </I> </TT>merge echelle orders <BR> <TT>MERGE/OPTIMAL <I>rebima weight out [delta] <BR> </I> </TT>Optimal weighted merging of echelle orders <BR> <TT>OFFSET/ECHELLE <I>[image] [range] [cover] [ordtab] [mode] <BR> </I> </TT>Determines the offset along the slit between the order <BR> coefficients and a given echelle spectrum. <BR> <TT>OVERLAP/ECHELLE <I>rebima order <BR> </I> </TT>Plots the overlap region between adjacent orders n and n+1 <BR> <TT>PLOT/CALIBRATE <I>[ord1,ord2] <BR> </I> </TT>plot dispersion relation in echelle reduction <BR> <TT>PLOT/ECHELLE <I>frame [ord1,ord2] [printer] <BR> </I> </TT>plot extracted echelle orders. <BR> <TT>PLOT/IDENTIFICATION <I>frame [ord1,ord2] [printer] <BR> </I> </TT>plot line identifications in echelle reduction <BR> <TT>PLOT/RESIDUAL <I>[ord1,ord2] <BR> </I> </TT>plot dispersion residuals in echelle reduction <BR> <TT>PLOT/SPECTRUM <I>in [start,end] <BR> </I> </TT>plots a rebinned spectrum in wavelength range <BR> <TT>PREPARE/BACKGROUND <I>[step] [init] [back_tab] [order_tab] [descr] <BR> </I> </TT>low-level command; create table back.tbl <BR> <TT>PREPARE/WINDOW <I>catalogue flat-bkg lhcuts <BR> </I> </TT>prepare echelle images for the command AVERAGE/WINDOW <BR> <TT>REBIN/ECHELLE <I>input output sample <BR> </I> </TT>rebin echelle orders into wavelength <BR> <TT>REDUCE/ECHELLE <I>input output [bkcor] <BR> </I> </TT>reduction of echelle spectra. <BR> <TT>REGRESSION/ECHELLE <I>[defpol] [niter] [absres] [kappa] <BR> </I> </TT>fit 2-dim. polynomial to order positions (defpol limited to 5,5) <BR> <TT>REPEAT/ECHELLE <I>[scalx,scaly] [response] <BR> </I> </TT>iterate on the response computation <BR> <TT>RESPONSE/ECHELLE <I>[std] [fluxtab] [response] <BR> </I> </TT>compute instrument response <BR> <TT>RIPPLE/ECHELLE <I>input output [params] [method] [option] <BR> </I> </TT>correct for the blaze function <BR> <TT>ROTATE/ECHELLE <I>cat,ima root-name [mode] [flip_axis] [angle] [o_time] <BR> </I> </TT>rotate (and optionally flip) echelle images <BR> <TT>SAVE/ECHELLE <I>name <BR> </I> </TT>saves current echelle session <BR> <TT>SAVINIT/ECHELLE <I>ima,tab mode <BR> </I> </TT>saves/reads echelle session keywords as descriptor of an image/table <BR> <TT>SCAN/ECHELLE <I>frame [scan-par] <BR> </I> </TT>update echelle keywords SCAN and IMSIZE. <BR> <TT>SEARCH/ECHELLE <I>frame [width2,thres2] <BR> </I> </TT>search for emission lines <BR> <TT>SEARCH/ORDER <I>[ordref] [w,t,s] [ordtab] [defmtd] <BR> </I> </TT>define echelle order positions <BR> <TT>SELECT/BACKGROUND <I>[all] <BR> </I> </TT>interactive unselection of background reference positions <BR> <TT>SET/ECHELLE <I>par=value [...] <BR> </I> </TT>set echelle keywords <BR> <TT>SHOW/ECHELLE <BR> </TT>show echelle session <BR> <TT>SUBTRACT/BACKGROUND <I>input bkg output [bkgmtd] [bkgvisu] <BR> </I> </TT>compute and subtract background from input frame. <BR> <TT>TUTORIAL/ECHELLE <BR> </TT>demonstrates main commands of echelle package <BR> <TT>UPDATE/ECHELLE <I>image <BR> </I> </TT>low-level command handling image geometry in world-coordinates <BR> <TT>UPDATE/ORDER <I>image [offset] <BR> </I> </TT>Updates order definition coefficients and background table. <BR> <TT>VERIFY/ECHELLE <I>file [type] <BR> </I> </TT>check consistency of frame size against predefined values. <BR></BLOCKQUOTE><HR> <!--Navigation Panel--> <A NAME="tex2html2529" HREF="node155.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html2525" HREF="node150.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html2519" HREF="node153.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html2527" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <A NAME="tex2html2528" HREF="node216.html"> <IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="icons.gif/index_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html2530" HREF="node155.html">irac2</A> <B> Up:</B> <A NAME="tex2html2526" HREF="node150.html">Standard Reduction Commands</A> <B> Previous:</B> <A NAME="tex2html2520" HREF="node153.html">do</A> <!--End of Navigation Panel--> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-09</I> </ADDRESS> </BODY> </HTML>
