m106 - 8th March 2022 - 929 30 secs unguided subs - new tools and help request (Stefano Ciapetti)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 106 · NGC 4217 · NGC 4226 · NGC 4231 · NGC 4232 · NGC 4248 · NGC 4258

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m106 - 8th March 2022 - 929 30 secs unguided subs - new tools and help request

Link to TIFF/FITS: https://ramfis.info/m106_080322.zip

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m106 - 8th March 2022 - 929 30 secs unguided subs - new tools and help request

Link to TIFF/FITS: https://ramfis.info/m106_080322.zip

This image is the sum of 929 30 secs unguided subs. 8 flats have been applied.
This is the first image using several new tools. Most important is the QHY 268M camera. This camera is really a piece of art. So sensitive. With my 250 F 3.9 newton I had to use gain 10 in order to make at least 30 secs exposure without saturation.
I have used a new Sharpstar 1x coma corrector combined with the Artesky filter cassette. All of the above ended up with a tough gradient. I had to apply the flats (which I usually don't take) due to some dust on the imaging train.

Result was a very heavy gradient that I have not been able to solve. If some of you can try to fix it, and explain me how that has been done, it will be very helpful.

Original
B
Final
C

B

Description: Some improvements done using Astroart gradient removal tool, using point function. Other processing steps are stars size reduction and unsharp mask on the center of the galaxy.

Uploaded: ...

C

Description: added more exposure (424 x 30 sec on the 4th of March and 847 x 30 sec on the 5th of March). Postprocessing in PS

Uploaded: ...

Fast Newtonians
Imagers of Italy
Suburban Astrophotography

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Status	Advanced success
Started	...
Astrometry.net job	5577930
PixInsight job	2BI7YQ91BI7RTZN6Q605FTJ5ZOG5PIF5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h18m25s.71
RA (top/left)	12h22m17s.49
RA (top/right)	12h16m38s.17
RA (bottom/right)	12h14m33s.92
RA (bottom/left)	12h20m15s.81

Dec (center)	+47°19′10″.0
Dec (top/left)	+47°17′03″.2
Dec (top/right)	+46°44′23″.10
Dec (bottom/right)	+47°20′48″.8
Dec (bottom/left)	+47°53′51″.5

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m106 - 8th March 2022 - 929 30 secs unguided subs - new tools and help request

m106 - 8th March 2022 - 929 30 secs unguided subs - new tools and help request

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m106 - 8th March 2022 - 929 30 secs unguided subs - new tools and help request

m106 - 8th March 2022 - 929 30 secs unguided subs - new tools and help request

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