M106 and friends in an urban sky: HaLRGB (Bogdan Borz)

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 and friends in an urban sky: HaLRGB

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M106 and friends in an urban sky: HaLRGB

I finally managed to finish this project and collect the Ha. I decided to use dark flats for this one as I did not use them before. Of course, my flats for the previous sessions had different durations, so it took some work to do the calibration properly. (I had to take several sets of darks since I had the great idea of varying the intensity of the flat panel in order to increase the flat duration). I don't know if I can improve much more the details by collecting more hours. This is probably the limitation of my Bortle 7/8 zone without a LP filter. Pretty pleased to see that the background was not as catastrophic as usual: possibly the flat darks helped, but also I did not do any NR in the linear mode, I think it can actually decrease the artefacts when shooting under LP. Kind of relieved to see that narrowband season is here : )

Clear skies !

Original
Final
B

B

Description: corrected background (thanks to Johny)

Uploaded: ...

Broadband under Bortle 7/8/9
ZWO ASI1600MM/QHY163M
AAA : Astronomes et Astrographes Amateurs
Astrophotographes (France)
Narrowband imaging
PixInsight Addicts
AstroBin Platform open discussions community forum
Light Polluted skies

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Status	Advanced success
Started	...
Astrometry.net job	3549485
PixInsight job	2TMHPNM0PL6PLEMB9T4E8AGXLZV26LUK
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	12h17m24s.479
RA (top/left)	12h20m57s.374
RA (top/right)	12h13m52s.653
RA (bottom/right)	12h13m54s.924
RA (bottom/left)	12h20m52s.849

Dec (center)	+47°13′50″.67
Dec (top/left)	+47°39′07″.44
Dec (top/right)	+47°39′24″.48
Dec (bottom/right)	+46°48′08″.71
Dec (bottom/left)	+46°47′52″.73

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M106 and friends in an urban sky: HaLRGB

M106 and friends in an urban sky: HaLRGB

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M106 and friends in an urban sky: HaLRGB

M106 and friends in an urban sky: HaLRGB

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