Search found 38 matches

by RonAM
Mon Aug 24, 2020 4:59 pm
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

Thanks Tim - give it a go- live stack makes it easy. My ZWO has such low noise at 5-deg C set point temperature that I can run the gain up to 350 if needed. I attached a screenshot of my laptop screen showing the histogram during live stack. I have so much light pollution that I keep the left limit ...
by RonAM
Mon Aug 24, 2020 4:05 pm
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

Thanks. The main issue is field rotation after about 2 minutes. The rocker box tracks very well for visual observation for hours, but since it is an Alt-Az Mount, the whole field rotates. So, all my deep sky work is done with SharpCap live stack, which aligns and rotates the frames as they are stack...
by RonAM
Mon Aug 24, 2020 1:35 pm
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

Thanks Brian. Your annotated image inspired me to learn and take a deeper look. I see there was some interest about color differences among the clusters. I applied an analysis using software by Prof Doug Brown (Physics) at Cabrillo College in California, Tracker.jar, LRGB region analysis. Qualifier:...
by RonAM
Mon Aug 24, 2020 12:21 am
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

Thanks again Brian for your annotations on my image, and your note regarding Robert Gendler's excellent documentation and images for the globular clusters in Andromeda. I have pulled up my original image as acquired, without enhancements, rotated and slightly cropped it, then added annotations for a...
by RonAM
Sun Aug 23, 2020 10:16 am
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

Thank you Brian. This is a fantastic reference. Your review and added annotations are much appreciated and indeed very helpful.

All the best,

Ron
by RonAM
Sun Aug 23, 2020 1:51 am
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

One more look with image rotated, cropped and further enhancements with Digital Photo Professional to see the star clusters in the core dust lane. Ignore the foreground stars and focus on the small luminous features in the dust. Some may be stars, some appear to be globular clusters.
by RonAM
Sat Aug 22, 2020 2:41 am
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

Here is a section of Andromeda’s core
Enhanced section of Andromeda core dust lane
Enhanced section of Andromeda core dust lane
CF6A9D87-BF32-4A00-80EB-71092BFCDE29.jpeg (226.38 KiB) Viewed 796 times
dust lane that I enhanced where it appears I may have captured some globular clusters
by RonAM
Fri Aug 21, 2020 11:58 pm
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

For collimating the f4.3, I’m lucky to have it in a Starmaster hybrid truss Dobsonian reflector. The hybrid truss remains fully assembled with it, the upper tube, and the secondary mirror all as one unit. From one session to the next I just separate the truss section from the rocker box, and then pu...
by RonAM
Fri Aug 21, 2020 10:11 pm
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Re: Andromeda Core Dust Lane Detail

Thanks Robin, and SharpCap makes this possible via the live stack capabilities including such excellent control of the camera functions. I’m enjoying this so much now. Also, the live display on the laptop screen provides a wonderful way to share with my friends and neighbors while the image is being...
by RonAM
Fri Aug 21, 2020 1:33 am
Forum: Gallery
Topic: Andromeda Core Dust Lane Detail
Replies: 15
Views: 1314

Andromeda Core Dust Lane Detail

Andromeda Dust Lane Detail 8-19-2020 low-res.jpg Andromeda is beautiful in wider field images, but in this case I wanted a close in look at the details of the dust lanes near the core. This image was acquired 19-August 2020. Starmaster hybrid truss Dobsonian reflector, 14.5" f4.3 Zambuto mirro...