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This image was taken with a 1986 vintage Celestron C8, using a Celestron focal reducer and an ASI294MC Pro camera, with 300-second exposures captured in Bortle 5-6 skies. I processed these subs about two years ago.
If you’re not directly under a streetlight, you should be able to achieve results on par with or potentially better than this.
Without seeing your stacked image, it’s challenging to pinpoint the exact issue. However, I recall my initial experience with an IMX571-based camera: after processing the subs, I was disappointed with the dark and low-detail result. In my case, I had taken the dark frames with the camera set to a 50 bias offset, but the NINA imaging session defaulted to a 20 bias offset. As a result, when the darks were subtracted from the subs, the image lost its nebulosity and went too dark. It might be worth checking if something similar happened with your setup.
Chris
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