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How bad is your noise is the question?
Darks will help in any event.
I find a benefit of a less than perfect PA is that over many exposures you get an "automatic" dithering... and that helps with noise...but startools really helps with noise.
When I set up my widefield mount and camera I am going for a cool box for the camera and as I now have an intervalometer make the interval 30 seconds...because I can☺.
My suggestion is try a run with 5 second intervals, say 3 to check Leons advice☺ and maybe something longer and see if you can detect any difference....
Alex
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