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Assumptions:

• You have been testing your protein (or, as in my case, salt) crystals for X-ray diffraction, and you've collected a number of .osc files (e.g. from a Rigaku R-Axis4 detector).
• You'd like to print out a record of the screening session, with images of each of the shots composited into one large image, like this one (click to enlarge):
  
• You don't mind the reduction in dynamic range.
• You have access to mosflm (version 6.2.3 or newer) from ccp4.
• You have access to the ImageMagick suite, commonly included in many Linux distributions, and available for many other platforms.

Two Steps:

1) You can run a simple script like this to create a .jpg file from each .osc file:

#!/bin/csh -f

set exten01 = "osc"
set exten02 = "jpg"
set MOSFLM = ipmosflm
set files = *.osc

foreach I ($files)
set base = `basename ${I} .${exten01}`

$MOSFLM << EOF
image ${I}
xgui on
go
CREATE_IMAGE BINARY TRUE FILENAME ${base}.${exten02}
return
exit
exit
EOF

end

(You can copy this text into a file named convertOsc.csh
Then make it executable with 'chmod +x convertOsc.csh'
Then run it with './convertOsc.csh'
In our lab, you set up your environment first with 'source /sb/apps/ccp4-5.0/include/ccp4.setup')

2) Then use a command like this to combine all the jpegs, label them with their filenames, and output a .png image:

montage -geometry 200x200 -label "%f" -tile 5x6 *.jpg composite.png

[This information was adapted from the mosflm documentation].