WFI/MPIAPHOT data reduction pipeline, ver. Feb. 2001
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        Commands available with context file wfi.ctx are: 
     
        INPUT/WFI        get fits frames from tape/disk 
        RESTORE/WFI      rename bdf frames to original name 
        DEBIAS/WFI       remove bias and nonlinearity 
        MOSAIC/WFI       put 8 CCDs together to single mosaic 
        DEMOSAIC/WFI     split mosaic into 8 CCDs+header 
        FLAT/WFI         average a few flatfields into one 
        SMOOTH/WFI       smoothes mosaic frame with median 
        FRSTAT/WFI       determine frame statistics

        CORRECT/WFI      flatfield a science mosaic frame
        RINGEX/WFI       remove radially symmetric straylight
     
        FIOBJECT/WFI     find objects for comparison list 
        FIMOVE/WFI       find positional offset of frame 
        STACK/MOSAIC     stack sumframe (+ cosmic correction) 
        SEXTRACT/WFI     run SExtractor to get object list 
        PREPARE/PROJECT  prepare cosm frames for project 
        PROJECT/WFI      project object list onto cosm frames 
     
        HELP/WFI         show this command description list 
     
        Calling these commands without parameters will list 
        a help text with syntax description and examples. 
   

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