Thread: Ngc4945
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Old 23-03-2021, 12:46 PM
Jimbo_Aus (Jim)
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Join Date: Sep 2020
Location: Melbourne
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Quote:
Originally Posted by PKay View Post
Hi Jim

It just occurred to me that when you combine the different channels,

they should be aligned (registered) first.

Take the Lum image (or any channel) as the reference, and align all the others to it.

Makes sense?
Thanks - I use a reference sub which is determined by the SFS function that has the lowest FWHM value and also use a weighted expression to determine the highest weighted SNR and use that as a the reference sub when running image integration. Something I've been doing since reading Warren Keller's Inside Pixinsight book. I also dither during image capture and then use drizzle integration. I never had this problem with my other ZWO camera which is a 183mm pro but that had it's own problems with amp glow.
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