Category Archives: Star Clusters

M35 and NGC 2158 Mosaic – Sony IMX224

M35 and NGC 2158 2-panel mosaic. Right half was taken on Dec 11, 2017. 275×8 sec and the left half was taken on Dec 13, 2017, 100×20 sec at 2098 and 1832 gain, respectively. Rising Tech Sony IMX224 cam with a Televue TV-85 at F/5.6.

As promised, here is the 2-panel mosaic of the M35/NGC 2158 area.    Not too bad, but the seeing for Dec 11 was poor and I might re-shoot the NGC 2158 side to get a better rendition.

Here’s the gaudy version that I turned up the contrast on with a strong curves boost:

M35 and NGC 2158 2-panel mosaic. Curves to boost contrast.

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    🙂

EAA Roundup

M103 Open Cluster. 10×15 sec, 30×8 sec, 540×2 sec @ 2000 Gain. RT Sony IMX 224, TV-85 at F/5.6.
M15 Globular Cluster. 9×8 sec, 47×2 sec @ 2000 Gain. RT Sony IMX 224, TV-85 at F/5.6.
NGC 891 Edge-On Galaxy. 152×4 sec @ 2000 Gain. RT Sony IMX224, TV-85 at F/5.6.
Gamma Cass Ghost Nebula. 50×8 sec @ 2000 Gain. RT Sony IMX 224, TV-85 at F/5.6.
The Little Dumb Bell Nebula. 51×8 sec @ 2000 Gain. RT Sony IMX 224, TV-85 at F/5.6.

Here is a roundup of objects I was able to see during my most recent Electronically Assisted Astronomy (EAA) observing session.  These were taken in a Bortle Red zone and under a nearly full moon on Dec 1, 2017.

Cassiopeia Region Wide Angle

Cassiopeia region including M31, wide angle view. 6×300 sec @ ISO 1600, Sigma 28-70 Zoom at 28mm, F/2.8, Astronomic CLS filter. North is to the right in this view.

By luck I framed this one with M31 and the Cassiopeia region and got all the good nebulae that were in the area to boot.  You can see the Heart and Soul Nebulae, the PacMan Nebula, emission nebula NGC 7822, and other smaller nebulae like the one near Gamma Cass.    The Double Cluster is there along with lots of other open clusters.

It is not the best lens and I did do some distortion correction in PS.  It was a little difficult to process since this was the first time I used the Astronomik CLS filter.   Before, I had one light pollution filter and two cameras, so I finally got another one so they both have one.    All I need now is a small mount for light loads like the setup I used here and I could get two cameras going at the same time.   Yeah, buddy!  🙂