% @(#)diaphrroma.hlq	17.1.1.1 (ESO-IPG) 01/25/02 17:17:46 
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SECTION./ROMAFOT
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DIAPHRAGM/ROMAFOT                                                21-DEC-1989 RHW
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DIAPHRAGM/ROMAFOT frame [regi_tab] [rego_tab] ap_rad
	do aperture photometry with fixed diaphragm
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Purpose:      Make aperture photometry with fixed aperture
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Syntax:       DIAPHRAGM/ROMAFOT frame [regi_tab] [rego_tab] ap_rad
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              frame    = input image frame.
\ap\pa
              regi_tab = input registration table. The table can be created by
                         the ROMAFOT command REGIST/ROMAFOT; default name is the
                         frame name extended with `REG'. 
\ap\pa
              rego_tab = output registration table to receive the final results;
                         default name is the name of the input frame extended
                         with `MAG'. This table is fully compatible with that 
                         created by REGISTER/ROMAFOT and contains, in particular
                         the magnitude parameter defined as -2.5 * LOG(SUM),
                         where SUM is the summation over all pixel values (sky 
                         subtracted). 
\ap\pa
              ap_rad =   radius (in pixel units) of the aperture over which the
                         integration is performed; no default.
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Note:         none
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Examples:
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              DIAPHRAGM/ROMAFOT GCLUST GCLTAB DIA 5
              Perform aperture photometry on image frame GCLUST. Read positions 
              of the objects in table GCLTAB and store the results in table 
              DIA. The radius of circular area for integration is 5 pixels.
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