IC434 and NGC 2024 / The Horsehead and Flame Nebulae

 Posted: Dec 20th, 2025
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NGC
IC
HD
Technical Info
Telescope/Lens: Sky-Watcher 200 PDS
Camera: QHY268M
Mount: HEQ5 Pro
Guide Scope: Svbony SV106
Guide Camera: Qhy5iii715c
Software: N.I.N.A, ASTAP, GraXpert, Siril, Photoshop
Accessories: Baader 2" MPCC Mark III
Exposure:
18 x 60" ISO/Gain: 26 - Antila R
28 x 60" ISO/Gain: 26 - Antila G
23 x 60" ISO/Gain: 26 - Antila B
Yellow, Bortle 5 zone:
 46 Tochka Severo-Zapad Mo, Russia
 Dec 13th, 2025
1 h 9 m
316
Resolution: 5904x3901 px
Scale: 82098 KB
First light with the new camera! Happy upcoming holidays to everyone!
P.S.: During the shoot, there was strong wind, which caused most of the frames to be discarded. The L channel is complete.
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Comments

First light for the new camera!
A great New Year's gift :) The image is also great, but the diffraction spikes seem quite strong.
20 Dec, 2025 Reply
Nikolay Gorbunov Replied to Buzzard
Thanks! Regarding the diffraction spikes: I spent the whole evening working on them today. As I understand it, the new spider CYCK turned out to be glossy, which caused it to reflect a lot of stray light (so I was told), so I painted it with matte black paint along with the back of the secondary mirror. But to do that, I had to remove it, which means the collimation was thrown off, and I just recently learned about CollimationCircles. I took a planetary camera, attached a 1.25" fisheye lens to it, plugged it into the focuser, and got to work. I discovered that the secondary mirror doesn't go deep enough into the tube, causing the image of the primary mirror to be cropped by its edge, and on the other side, a piece of the tube is visible. I had suspected this before but couldn't prove it, and now it's more serious. I'll deal with this tomorrow :) "Insanity is doing the same thing over and over again and expecting different results."
21 Dec, 2025 Reply
Buzzard Replied to Nikolay Gorbunov
Yes, collimation is quite an engaging activity :) Good luck and patience to you! On my own 200PDS, I also replaced the spider with a solid one and installed a primary mirror mask.
21 Dec, 2025 Reply
Nikolay Gorbunov Replied to Buzzard
So I've already replaced the spider and installed the mask. Now I just need to sort this out.
21 Dec, 2025 Reply
It looks a lot like my work.
12 Mar, 2026 Reply
Nikolay Gorbunov Replied to Oeswww
Yeah, really, that's funny.
12 Mar, 2026 Reply

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