I recently bought an ASI294MC-Pro on sale, and a SW Quattro Coma Corrector to use with my Bresser 208mm F3.9 Newt.
Last night I got to try it all out under a quarter moon and low hanging hazy skies, not ideal but I'll take what I can get.
Skies around me are normally bortle 5
I ran the cooler to -10C for dark frame stability, it was only drawing 6%-12%
I set a gain of 530 (80%) and made darks for 4, 8 and 16s. (in retrospect I think I should have used a much lower gain due to the bright murky skies.) then i took flats using a tracing tablet.
The camera behaved well in SharpCap, (Iv'e been having issues with my RisingCam under directshow)
(all photos are resized and compressed for image limits)
The first thing I shot was Andromeda. I was ecstatic to fit M32 and M110 in the same frame. It was really fun to be able to zoom in and out to soak in all of the details around the FOV.
M31 4s x 131 = 524s
I had a bad line of sight for my high gain Wifi antenna, so I was unable to operate remotely. Fortunately I just got a nice down parka, so I was able to comfortably view at the scope side.
Next was M33. It was a perfect test for the new camera; massive wide FOV but chock full of details. Again it is awesome to be able to surf around the building image inspecting the details as it grew in clarity.
M33 4s x 66 = 264s
Another great use of the detailed FOV was NGC891 and friends to the SE (never knew). I was able to get most in frame and zoom into each as if I were using my smaller 224 sensor.
NGC891 and Friends 4s x 146 = 584s
I also looked at some open clusters, as a good check on the coma corrector. I looked a NGC457 (ET), the double cluster, NGC7789 and M38. I really like M38 and nearby NCG1907. It's near a great binocular asterism that looks like a 1.5° smiley face.
M38 and NGC1907 4s x 84 = 336s
Nearby was IC405 which I had never seen before. It was very beautiful with a mix of red emission and blue reflection nebula, in a sparse cluster.
IC405 8s x 22 =176s
Not too far away in/near Auriga there was the comet C/2017 T2 (PANSTARRS) A short 5 minute stack showed a faint but long tail.
C/2017 T2 4s x 92 = 368s
Last Saturday I did a 1 hour time lapse of C/2017 T2 with my 4.5" F4 and my IMX224. I set up sharpcap to save off the live stack every 5 minutes, and then I animated the resulting frames into a video
About the time I was getting too cold and thinking about wrapping up M47 crossed over the meridian and I had to check it out. It would be a good test for internal reflections and field sharpness of the coma corrector. I was amazed at the nebulosity that the camera pulled through the murky skies.
M47 4s x 105 = 420s
I also shot the Flame+ horsehead, and then the Orion nebula, but those where shot through floodlit tree limbs and the image suffered accordingly.
I ended up wrapping up around 1:30AM, Overall I had a blast and I look forward to more favorable conditions.
I think I should have used a much lower gain. At 530 gain and 4s the histogram was well off the left end, 8s put the hump near 50%.
I need to sort out some tilt in an adapter I use to collimate. I rotate the laser, no movement. I rotate the laser plus barlow, no movement. I rotate laser + barlow +adapter, and the dot orbits around.... That or I need to learn to collimate using the camera in place.