% @(#)load_cali.hlq	17.1.1.1 (ESO-IPG) 01/25/02 17:50:37 
%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
%.COPYRIGHT  (c)  1995 European Southern Observatory
%.IDENT      load_cali.hlq
%.AUTHOR     PB, IPG/ESO
%.KEYWORDS   MIDAS, help files, LOAD/CALIBRATION
%.PURPOSE    On-line help file for the command: LOAD/CALIBRATION
%.VERSION    1.0  10-AUG-1995 : Creation, PB
%----------------------------------------------------------------
\se
SECTION./CALI
\es\co
LOAD/CALIBRATION   					10-AUG-1995 PB
\oc\su
LOAD/CALIBRATION   
	display wavelength calibration result
\us\pu
Purpose:    
            Displays the extracted and rebinned wavelength calibration frame
            for verification of the regularity of the order by order
            dispersion relations.
\up\sy
Syntax:     
            LOAD/CALIBRATION     [input]  [output]
\ys\pa
            input = Input image. By default the wavelength calibration
                    frame (Session keyword: WLC).
\ap\pa
            output = Output image. Default: middummr.bdf
\ap\no
Note:       
            1) Display cuts are copied from the input image. The
               output image can be reloaded with new cuts for a better
               visualisation.
 \\
            2) The wavelength range should regularly increase from 
               bottom to top on the displayed image.
 \\
            3) If necessary the regularity of the dispersion relations
               can be improved by using the option WLCOPT=2D fitting a
               bivariate polynomial to the dispersion relation. Once
               a satisfactory calibration has been obtained with the
               method WLCMTD=PAIR, ANGLE or GUESS and WLCOPT=1D, new
               coefficients for the 2D solution are given with the
               sequence:  \\
                   SET/ECHELLE WLCOPT=2D WLCMTD=ORDER \\
                   IDENT/ECHELLE \\
 \\
            4) Method WLCMTD=ORDER can also be used to recompute 
               the dispersion coefficients for another tolerance
               value (Session keyword TOL).
 \\
\on\sa
See also: 
            LOAD/IDENT, PLOT/RESIDUAL, IDENT/ECHELLE, REBIN/ECHELLE, 
            LOAD/CALIB, PLOT/CALIB, PLOT/IDENT
 \\          
\as\exs
Examples:
\ex
            LOAD/CALIB  
\xe\sxe