Kirkus, Paul is dead right, as always, however if your camera is capable of ICNR, meaning, the camera will take a dark automatically each time you take a light, then there is no need to take individual darks at all.
However your the time taken to take your lights will be doubled whilst the camera is doing this ICNR, but your darks will then be perfectly matched to your lights regarding length and temp.
You then only have to take some flats, combine them and make one master flat, just load them all into your program, and you will end up with one combined image of the entire image run.
Leon
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