Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
Going from CCD to CMOS (a discussion about colors and exposure times)
In my last setup, I was running a SBIG STF8300 and had LRGB Astrodon filters. The scope was a C 9.25 at F/10 (which is still my main scope). My exposures were 10 minutes for luminance and 5 minutes for color.
I've sold that camera and now use a QHY268M with CFW-L (I wanted to keep my 50 mm Astrodon filters).
I took some test images last week at Cherry Springs State Park, learning how to work with NINA and the camera in the process.
I noticed that 5 minute exposures of M101 seemed overexposed. It was also an hour from meridian flip when I started imaging, so I switched to M27. Clouds were coming in and there was some wind. But I got an LRGB set of 3 minute exposures at F/10.
I have 2 questions: Is it typical to see exposure times cut by 2/3 going from KAF CCD chips to the Sony 26.8 mp chips? And should I stop taking luminence images unless I want a monochrome image?