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Thanks Nik and Dave,
Comments appreciated.
Here is an update with another 3 hours of Ha. Now using HOO palate with RGB stars.
I notice that with the additional stacked subs the noise also gets stacked leading to a strong background colour cast. Background extraction works ok but I loose some detail in the process. Having only recently begun Mono imaging I was surprised by the strong colour cast for each filter. I had imagined that the background would be 'black' with only the relevant detail showing. I found it easy to remove the background with OSC. I run the camera at -10C at unity gain.
BTW the blue dots in some of the stars only showed up when I exported to jpg file to upload!
Chris
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