undo flats
If I understand correctly- instead of dividing the flats from the lights you can open the light as image A in the pixel math and then open B the flat and AXB? - can only do one image at a time though? (light plus flat)
Is there a batch processing for this? (I'm at work so I just googled)
The other thing that may be possible is access previous versions in the shadow copy on hard drive in W7? ( googled that as well)
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