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Thank you all very much for the replies.
Startrek...I did present an image earlier in this thread showing that I use Astro pixel processor, I stacked 46 exposures at ISO 800, all with correctly calibrated flats, darks, bias, and a bad pixel map the image shows what the result of that was. I don't use free software like deep sky stacker, is that better than Astro pixel processor? I use ASI Air to capture my images utilizing a 30mm F4 guide scope and ASI120mm mini camera for guiding/dithering. From your advice, I should try more exposures at shorter durations. Thank you, I will try that and report back.
JA...
At the end of the day, my setup gives quite a wide field of view, and I can crop out the vignetting on most images, my concern is really the noise, and if I can go by what others have mentioned here, I am expecting too much from long exposures, regardless of how good the guiding/tracking is, and I should focus more on getting a better SNR ratio by capturing more shorter exposures.
Many thanks to all.
Regards,
Daniel
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