M 27

 Posted: Aug 6th, 2025
Show astrometry on hover
NGC
IC
HD
Technical Info
Telescope/Lens: Sky-Watcher 25012
Camera: ZWO ASI294MM Pro
Mount: MT-90M
Guide Scope: Sky-Watcher BK804
Guide Camera: zwo asi 120 mm
Software: DSS, FITStacker14c, Fitswork4, PS
Accessories: CC SkyWatcher f4, zwo efw, optolong HORGB
Exposure:
42 x 300" ISO/Gain: 0 - H bin2
44 x 180" ISO/Gain: 0 - O bin2
24 x 30" ISO/Gain: 0 - R bin2
24 x 30" ISO/Gain: 0 - G bin2
24 x 30" ISO/Gain: 0 - B bin2
Orange zoneLight Pollution:
 Krasnoyarsk, Russia
 Aug 18th, 2023
6 h 18 m
668
Slightly brightened the existing photo, didn't redo anything. I've been looking at it for a long time, wanted to for a long time, but didn't want to spam. The periphery remained as it was, just became more noticeable.
Resolution: 2659x2206 px
Scale: 2894 KB
Current photo Updated
  6 Aug, 2025
  6 h 18 m
Немного осветлил имеющееся фото, ничего не переделывал. Давно смотрел, давно хотел, но не хотел флудить. Периферия осталась как и была, просто стала более заметна.
  18 Aug, 2023
  6 h 18 m
Съемка в течении августа. Водород из города при Луне, и 35 минут за городом без Луны. Кислород за городом с Луной. Цвет для звезд за городом без Луны.
  28 Oct, 2021
  7 m
Быстрый выстрел по фану, без гидирования
Show changes
Add comment

Comments

Good day, Evgeny!
Great work!
I also have a ZWO 294 MM.
I have a couple of questions:
For bin 1 and bin 2 modes, do you need to shoot different darks?
What is the reasoning behind using zero gain?
7 Aug, 2025 Reply
Evgeniy Osharov Replied to Ryjov Aleksey
Hello! Yes, dark frames are captured exactly matching the lights, bin2 is not equal to bin1. Zero gain was part of an experiment; I observed different objects, thinking that with long exposures the signal would be cleaner, or rather, the noise wouldn't be as amplified. Currently, I'm shooting more with short exposures at 120 gain.
8 Aug, 2025 Reply
Ryjov Aleksey Replied to Evgeniy Osharov
Thank you, Evgeniy! Clear skies!
9 Aug, 2025 Reply

Comments are available only to registered users. Register or log in to leave a comment.