% @(#)reducephot.hlq	17.1.1.1 (ESO-IPG) 01/25/02 17:17:04
%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
%.COPYRIGHT  (c)  1992 European Southern Observatory
%.IDENT      reducephot.hlq
%.AUTHOR     ATY, IPG/ESO
%.KEYWORDS   MIDAS, help files, REDUCE/PHOT
%.PURPOSE    On-line help file for the command: REDUCE/PHOT
%.VERSION    1.0
%----------------------------------------------------------------
\se
SECTION./PHOT
\es\co
REDUCE/PHOT                                        30-DEC-1992  ATY
\oc\su
REDUCE/PHOT
          Reduces tables of observational data
\us\pu
Purpose:
          The PEPSYS command REDUCE/PHOT reads observational data from MIDAS
          *.tbl files.  The user needs to construct such files from data in
	  whatever form is available.  CONVERT/PHOT helps the user build the
	  necessary files, if raw data in either Danish or ESO standard
	  formats are available.

	  REDUCE/PHOT determines and corrects for the transformations from
	  inside to outside the atmosphere, and from instrumental to standard
	  system.  (The former is often called ``extinction correction.'')
\up\sub
Subject:
	  Photometry, extinction, transformation
\bus\sy
Syntax:
          REDUCE/PHOT
\ys\see
See also:
          CONVERT/PHOT
\ees\no
Note:
          REDUCE/PHOT is completely interactive; no arguments are needed.
\on\exs
Examples:
\ex
          REDUCE/PHOT
	  This starts an interactive session with the reduction program.
\xe\sxe