You're not really giving us enough info. If the images you refer to are straight out of the camera, they will have noise. That's why we use either darks, or in camera noise reduction, and/or stack lots of subs in order to control noise.
If your unprocessed images have a red tinge, it is almost certainly nothing
to do with noise. Noise is a mottled effect, not an overall tinge.
Are you using the camera's ISO sweet spot? Very far either side of it and the noise will not be at it's lowest level.
In this technological age many newbies are plunging straight into equipment and myriads of software before they have any imaging experience, and then often encounter several problems at the same time, and have little or no idea of how to solve them. I will probably get burned by some of the forum members for saying it, but I suggest that for now you forget super precise polar alignment, guiding, laptop mount control etc, and get your unguided imaging routine down pat, and also stacking, and at least basic image processing. You can then move forward with your
imaging on a solid footing. I don't know what scope you are using, but if
it is a refractor or Newtonian you should be able to get unguided images
somewhere around 30-60 secs, which is long enough for good results.
raymo
Last edited by raymo; 27-01-2019 at 10:15 PM.
Reason: more text
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