The open star cluster M39 in the constellation Cygnus.

 Posted: Aug 7th, 2025
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IC
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Technical Info
Telescope/Lens: Sky-Watcher Quattro 150P
Camera: Nikon D3300a
Mount: HEQ5 Pro Belt
Guide Scope: Datison 60/250
Guide Camera: ZWO ASI 120MM mini
Software: Electra Stacking, StarNet++, FitsWork, Siril, Photoshop 2020
Accessories: 2" МPCC Mark III, ZWO AsiAir-mini, ZWO EAF
Exposure:
21 x 20" ISO/Gain: 1600
Green zoneLight Pollution:
 Sochi Sharciz Vtoroy, Russia
 Jul 25th, 2025
7 m
487
Resolution: 3820x5348 px
Scale: 112928 KB
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Comments

Has the Spider been replaced? Or is it the original one?
12 Aug, 2025 Reply
Pavel Gorlov Replied to Lxkor
Of course I changed them. The original springs were just too flimsy and couldn't hold the collimation.
13 Aug, 2025 Reply
Lxkor Replied to Pavel Gorlov
I'm considering buying the same telescope, and I'm wondering if I should get a spider and a mask for the primary mirror right away.
13 Aug, 2025 Reply
Pavel Gorlov Replied to Lxkor
It's definitely worth it!
14 Aug, 2025 Reply

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