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Old 21-09-2016, 06:06 PM
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RickS (Rick)
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Join Date: Apr 2010
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You can probably get away with doing the flats at a different gain setting to the lights but you'd want to check. Here's how to do that: take a couple of sets of flats at different gain settings, make master flats out of each set and then use one master flat to calibrate the other. If the result is a completely even and featureless image then you're good. If not, then the gain setting is having some odd non-linear effect and you'll need to take flats at the same gain setting as your lights.

The three peaks will be because it is an OSC camera and the brightness of the panel and the sensitivity of the sensor will be different in R, G & B.

Very short exposures are fine so long as you don't have a mechanical shutter to leave a shadow.

Cheers,
Rick.
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