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NGC6992 Eastern Veil

Category:Deep Sky
Published:
2406
NGC6992 Eastern VeilNGC 6992NGC 6995IC 1340
Resolution:
2841x3894 px
File size:
3212 KB

Photo description / processing

A fantastic farewell chord from my Canon, respect to it! The new astro camera is already on the way...

Technical information

Telescope/Lens
Newtonian 150/750
Camera
Canon EOS 500D (astro-modified)
Mount
Sky-Watcher HEQ5 Pro (belt-modified)
Guide Scope
Pentax Takumar 200mm f/4 Lens
Guide Camera
T7M
Accessories
GSO Coma Corrector
Software
Astro Photography Tool (APT), PHD2, Siril, Topaz DeNoise AI, StarNet++, Luminar
Location
Краснознаменск, Россия

Light pollution

Orange, Bortle 6 zone

Date taken

Exposure

  • 54 × 300″ · ISO/Gain: 1600 · Optolong l-eNhance ·

Total exposure: 4 h 30 m

Photo versions

NGC6992 Eastern Veil
Updated
NGC6992 Eastern Veil

Nov 8th, 2023

4 h 50 m

"Why are there so many remakes in your work?" (c) "Let the one with bad old songs write new ones." (c) While there's no new material, I'm practicing on old data using new software and algorithms that have accumulated quite a bit over the past two years. Excellent: General Hyperbolic Stretching (GHS) in Siril; Foraxx formulas for combining HOO in Pixelmath; GraXpert AI for one-click background equalization. Good: AstroDenoisePY – a decent free neural network for noise reduction, trained on astrophotography. It works best when used in combination with Topaz – if you apply Topaz after AstroDenoisePY, it stops acting up and inventing details. Satisfactory: Astrosharp – intended as a free alternative to BlurXterminator, but it performs much worse so far. The author is actively working on it, so I'm hoping for progress; deconvolution in Siril – maybe I just don't know how to prepare it properly.

NGC6992 Eastern Veil
Current photo
NGC6992 Eastern Veil

Sep 3rd, 2021

4 h 30 m

A fantastic farewell chord from my Canon, respect to it! The new astro camera is already on the way...

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Comments

Aleksandr Bubela
Hello fellow hobbyist! I happened to see your photo on VK, and it really caught my interest, especially after reading the list of equipment you used. I also have a coma corrector from GSO and a Canon 450D camera. With a standard T-ring, the coma isn't fully corrected, so I decided to reach out to you for advice. How did you handle this issue? Ernes states that the back focus distance is 57 mm, and with a T-ring, the coma should be properly corrected. However, a Ukrainian astronomy shop's website mentions a back focus of 75 mm and says an additional adapter is needed between the T-ring and the ring included with the corrector. If it's not too much trouble, please email me your response at aleksmc2008@mail.ru or contact me on VK: Sasha Bubela, Donetsk, Ukraine. I would be very grateful for your reply. I'll upload a sample of my latest photo here as an example.
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BootleggerReply to Aleksandr Bubela
I don't post anything on VK, you've made a mistake. Regarding the corrector, its back focus is 75mm, Ernest is wrong. You need to add the M42-M48 adapter from the kit and a 15mm ring to the T-ring. Even then, it still doesn't cover the corners of the Canon sensor, which is visible in the photo above.
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