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M 3 (NGC 5272) globular cluster in Canes Venatici

Ryjov Aleksey
2755026
Category:Deep Sky
Published:
1272
M 3 (NGC 5272) globular cluster in Canes VenaticiNGC 5272
Resolution:
1876x1401 px
File size:
590 KB

Photo description / processing

M 3 is one of the largest and brightest globular clusters. It contains about 500,000 stars. It is located at a distance of 33,900 light-years. Its apparent size is 38'. It was discovered by Charles Messier on May 3, 1764. Under favorable observing conditions, it can be seen with the naked eye.

Technical information

Telescope/Lens
Askar SQA 85
Camera
ZWO ASI2600MC PRO
Mount
Ioptron HAE 29 C
Guide Scope
Askar 52mm F4
Guide Camera
ZWO ASI 120 MM mini
Software
SharpCap, DeepSkyStacker, Siril
Location
Петушки, Владимирская область, Россия

Light pollution

Orange, Bortle 6 zone

Date taken

Exposure

  • 48 × 180″ · ISO/Gain: 100 ·

Total exposure: 2 h 24 m

Photo versions

M 3 (NGC 5272) globular cluster in Canes Venatici
Updated
M 3 (NGC 5272) globular cluster in Canes Venatici

Mar 28th, 2025

2 h 24 m

Processed in PixInsight by Oleg Novoselov, for which special thanks to him! The result is a completely different vision, where the capabilities of the telescope are more fully revealed.

M 3 (NGC 5272) globular cluster in Canes Venatici
Current photo
M 3 (NGC 5272) globular cluster in Canes Venatici

Mar 25th, 2025

2 h 24 m

M 3 is one of the largest and brightest globular clusters. It contains about 500,000 stars. It is located at a distance of 33,900 light-years. Its apparent size is 38'. It was discovered by Charles Messier on May 3, 1764. Under favorable observing conditions, it can be seen with the naked eye.

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Previous version
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Comments

Oleg Novoselov
Comment on photo: M 3 (NGC 5272) globular cluster in Canes Venaticifrom
Alexey! Something's not quite right, this telescope shouldn't be drawing like this... I can't find online whether it has a UV/IR filter or just a protective glass? And have you tried shooting with filters on it at all?
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Oleg NovoselovReply to Ryjov Aleksey
Comment on photo: M 3 (NGC 5272) globular cluster in Canes Venaticifrom
I checked it at work, the telescope is a beast!!! Something happens during stacking.
Here's a link to https://cloud.mail.ru/public/ywnj/SExePWKXF
Probably need to look into switching to PixInsight.
Also, I would try installing a UV/IR cut filter or some similar broadband filter. I've read that the built-in filter in some ASI cameras isn't very good.
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Ryjov AlekseyReply to Oleg Novoselov
Comment on photo: M 3 (NGC 5272) globular cluster in Canes Venaticifrom
Thanks for your help, Oleg! Overall, the issue might be with the stacking, and regarding the filter, yes, I need to think about it. The telescope is good, no problems with it, that's clear. I'll check out the link! One more question related to this: Would you like to try processing my raw file in PixInsight? I'm really curious to see what the difference would be.
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