M33

 Posted: Sep 29th, 2025
Show astrometry on hover
NGC
IC
HD
Technical Info
Telescope/Lens: Sky-Watcher 150/600 Quattro
Camera: Canon 200D
Mount: Sky-Watcher HEQ5 PRO SynScan
Guide Scope: 60 mm Guide Scope
Guide Camera: ZWO ASI 178MM
Software: Pixinsight, PhotoShop
Accessories: Zwo Asi Air Plus, СС 0,85х
Exposure:
100 x 120" ISO/Gain: 1600
Green zoneLight Pollution:
 Novosibirskaya Oblast Verh-Irmen, Russia
 Sep 27th, 2025
3 h 20 m
402
Crop
Resolution: 3713x2478 px
Scale: 7110 KB
Updated
  1 Nov, 2025
  5 h 20 m
Current photo
  29 Sep, 2025
  3 h 20 m
Кроп
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Comments

I can't figure out what brightness the galaxy should be and what color it should be. For me, no matter how I color calibrate, it always turns out warm-toned and quite saturated. For others, it's somewhat dim and grayish-blue. Yours turned out neutral with a bluish tint. Where is the truth?)
29 Sep, 2025 Reply
Alex Ch Replied to Oeswww
The thing is, this is essentially the L-channel, and color would be better captured with a monochrome camera and LRGB filters. By the way, I toned down the bluish tint a bit—after PixInsight, it was shifted more toward the blue spectrum. Also, I couldn’t manage to calibrate the color on this one; if I succeed later, I’ll update with a new version—that would be interesting too.
29 Sep, 2025 Reply

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