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INDI Library v1.9.9 Released (30 Nov 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

Gallery: 27 Hours on M101

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I imaged this object twice. Once from my back yard about a year ago on a 6" RC telescope with the ZWO ASI1600MM-C and Astrodon filters. Logged about 17.5 hours at that time. Then about two weeks ago, I stayed in the country with my wife, and took the same telescope out there with a new camera to test out...the ZWO ASI071MC-Pro. I logged another 9.5 hours with that setup. Due to the larger sensor size, I got a much wider field of view compared to the 1600. For the image below, I decided to combine data from both sessions for a total of 27 hours. It's cropped to the 1600 sensor size. Moonlite focuser, CCDT67 telecompressor, and CGX are the remainder of the equipment.

-Andrew
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Mac Observatory - All about using the Mac for Astrophotography: www.macobservatory.com
Astrobin: www.astrobin.com/users/Lead_Weight/
The following user(s) said Thank You: Alfred, Ferrante Enriques, Brian, alacant, Brent
3 years 8 months ago #38594
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WOW! Fantastic image!


Wouter
Wouter van Reeven

ASI6200MM and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and 5 slot 1.25" filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R
3 years 8 months ago #38601

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Replied by Greg on topic Gallery: 27 Hours on M101

Great results! (I can only dream of 27 hours on a subject :-P )

By the way, for those who want an inexpensive ASI071, its the same sensor as in the Pentax K-5 :-D (but with cooling) - awesome!
Last edit: 3 years 8 months ago by Greg.
3 years 8 months ago #38604

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Replied by Alfred on topic Gallery: 27 Hours on M101

My goodness! 27 hours... I never got past 2 hours! I'm wondering... do you sit by the scope while taking subs or do you sit at a client computer in a warm place? Or, do you set up the system, schedule re-focusing etc. and go to bed? Just curious... Superb image, my congratulations!
3 years 8 months ago #38618

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Hah, thanks for the compliments. I try not to sit by it all night. I do manually set up the scope each night as I don’t have an observatory, but thanks to the automation I don’t really have to babysit it. Unfortunately there have been some ups and downs with EKOS on the Mac transitioning to 3.1, and some things broke. Meridian flips no longer work for me, and I’m not sure if it’s the CGX driver I started using, or changes to the meridian flip system that are causing it. I used to use the regular Celestron Nexstar driver. So I apparently also have an amazing internal clock in my body, and I’ll look at what time the object is supposed to pass the meridian, and tell myself that I need to wake up at that time and force a flip. And somehow I magically wake up at that time. Haha. But otherwise I could have had more data on the object. Because of general bug issues that pop up every once in a while and cause things to not quite operate as planned and imaging stops unknown to me while I sleep sometimes.

But for the most part, prior to 3.0 I’ve been able to image all night. And I’ll typically spend 2-3 nights on a single object to get sufficient color data and signal.
-Andrew
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Mac Observatory - All about using the Mac for Astrophotography: www.macobservatory.com
Astrobin: www.astrobin.com/users/Lead_Weight/
3 years 8 months ago #38624

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