M104 Sombrero Galaxy

 Posted: May 5th, 2026
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NGC
IC
HD
Technical Info
Telescope/Lens: SkyWatcher 150/600 Quattro
Camera: ZWO ASI585MM
Mount: Sky-Watcher HEQ5 PRO
Guide Scope: 60 mm Guide Scope
Guide Camera: ZWO ASI 662MC
Software: Pixinsight, PhotoShop
Accessories: Zwo Asi Air Plus, СС 0,85х
Exposure:
60 x 30" ISO/Gain: 252 - ZWO L
60 x 30" ISO/Gain: 252 - ZWO R
60 x 30" ISO/Gain: 252 - ZWO G
60 x 30" ISO/Gain: 252 - ZWO B
Yellow, Bortle 5 zone:
 Novosibirskaya Oblast Jerebcovo, Russia
 May 5th, 2026
2 h 0 m
37
Resolution: 1966x1095 px
Scale: 2701 KB

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Comments

Wow, what a beauty!
Today, at 13:08 Reply
Alex Ch Replied to Poppy8micro
Thank you! It's a pity the atmosphere didn't allow pulling out the details, only hints of them. Of course, you need to shoot at least ten degrees further south and with a telescope of at least 200mm.
Today, at 13:21 Reply
Poppy8micro Replied to Alex Ch
What altitude is it at for you? Mine is at 24.8 at meridian transit. But my rig has been sitting in the yard for 3 days, I need to bring it into the garage for it, but the neighbor's light there gets in the way. I'm currently at 367mm focal length and 71mm aperture with a reducer, and for long focal length the weather just isn't right.
Today, at 13:25 Reply
Alex Ch Replied to Poppy8micro
Around 20 degrees or so, guiding wasn't great, light pollution, and the Moon was rising. There's room for improvement, the object is really cool!
Today, at 13:33 Reply
Poppy8micro Replied to Alex Ch
I put a 685 IR pass into my 662, it doesn't shake as much, but gain 450 and bin 2. Sometimes it drops to 0.6, but sometimes there aren't enough stars.
Today, at 13:48 Reply
Alex Ch Replied to Poppy8micro
Good idea, by the way. Yesterday we switched from a one-second exposure to one and a half seconds, and guiding became calmer — you can't keep up with the seeing in our swamps. I'll try your version, I happen to have that filter, thanks!
Today, at 13:50 Reply
Poppy8micro Replied to Alex Ch
For my mount, 1.5 seems too much! When it's calm, I set it to 0.5, usually with a 1-second exposure. I think if your guide scope has a 60mm aperture, everything should work smoothly. My stars have become excellent compared to the UVIR.
Today, at 14:14 Reply

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