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With so many images it may be possible to try summing pairs of images for a start and then stacking and median averaging the stacked pairs. This would be the equivalent of doubling your exposure. It is better if the pairs are far apart in the exposure sequence. This is where any slight drift is an advantage as you are adding noise from different parts of your sensor. This will tend to even out any noise present.
first pair exp 1 and 50
2nd pair exp 2 and 51
3rd pair exp 3 and 53
and so on.
If this works then try by summing lots of four and then stacking and median averaging. This will be the equivalent of four times the exposure.
The LMC is very difficult to get a decent image as the contrast is very low. We all start somewhere. Your image is far better than my first attempts.
Bert
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