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I've been led to believe from expert commentators that LENR was a huge waste of time and that taking darks afterwards was the better option.
However where I can see a benefit is over a long imaging session, particularly in summer, where the temperature could drop several degrees from the start of the evening. (though to offset that the sensor temperature gradually increases to a certain point every time an image is taken)
I wonder if a better solution would be to somehow manually take a few dark frames, say every hour, and apply those darks to the previous hour's worth of light frames..
I've just bought myself a CentralDS cooled / modded Canon 6D to try to minimise the problem of dark noise.
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