M51 Spiral Galaxy – Sony IMX224

M51 Spiral Galaxy on 12/13/2017. 81×20 sec @ 1832 Gain, Rising Tech Sony IMX224, Televue TV-85, SharpCap 2.9.

Here’s an object I’ve been itching to shoot with the RT IMX224 cam.   This is only 27 minutes worth of 20 sec exposures!    🙂

I think that between 500 and 1000 subs would really be what this object needs with this setup.     In the meantime, I put the above image together with 25 minutes of DSLR camera data taken with the same scope.   Check it out:

M51 – 27 minutes IMX224 and 25 minutes with a DSLR (at a dark site) combined.

The Dumbbell Nebula – Sony IMX224

M27, The Dumbbell Nebula. 97×8 sec @ Gain 2098, RT IMX224, TV-85 at F/5.6, Sharpcap 2.9.

I rushed to setup and shoot this one before it went behind a tree.  It was only 97 frames at 8 seconds for a total of about 13 minutes.   But, I love  how it turned out with this Sony IMX224 camera.  It looks as good as or better than most of my DSLR shots of the same object.

It looks even better if I combine the two cameras’ datasets into one image to get the best of both:

M27 IMX224 data combined with 48 minutes (24×120 sec @ ISO 1600) of DSLR data taken with the same telescope.

Owl Nebula – Sony IMX224

The Owl Nebula. 5×300 sec @ 100 Gain, RT Sony IMX224, Televue TV-85 at F/5.6, Sharpcap 2.9.

I tried long exposures with no gain and no darks using the Rising Tech Sony IMX224 eyepiece/guider cam to image the Owl Nebula, recently.  I was using it like I would one of my Canon DSLR cameras with long exposures at low ISO when shooting in bad LP conditions.

Hot pixels were worse than I thought, so I had to do some aggressive noise reduction.   Next time, I will definitely use darks based on this experience.  The camera has low read noise, but not low hot pixels with exposures this long.

M82 Galaxy – Sony IMX224

M82 Galaxy on Dec 11, 2017. 333 x 8 sec @ 2098 Gain, RT IMX224, SharpCap 2.9, TV-85 at F/5.6.

I imaged this galaxy with the Rising Tech Sony IMX224-based Eyepiece/Guider cam the other night.   It could use more time, but what I did get shows it well enough.   Color on the stars were lacking since the gain settings I was using washed them out.

NGC 2158 and M35 (Partial)

NGC 2158 and part of M35 taken on Dec 11, 2017. 275×8 sec @ Gain 2098, SharpCap 2.9, RT Sony IMX224, Televue TV-85 at F/5.6. Resized to 200% in post processing.

I had in mind when starting this that I could get a mosaic going for M35 and its nearby companion, NGC 2158.    So, I started on NGC 2158 first since it is the more interesting cluster.     By the time I was finished, my window to shoot was just about over, so I moved on to something else and did not finish the mosaic.

What I did get came out OK for 8 second exposures.      I will probably go back to it the next time I use the Rising Tech Sony IMX224 eyepiece cam.    It is actually enjoyable watching SharpCap do live stacking with the short exposures.    Reminds me of the old days when I was doing mostly planetary imaging.   lol    🙂