M101 LRGB Quattro 8s (SamAndrew)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · Pinwheel galaxy

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M101 LRGB Quattro 8s

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M101 LRGB Quattro 8s

Here is the first of the datasets captured during the great run of clear nights we had in the UK during March.

Feel like things are starting to come together, and my processing skills are getting better. The noise suppression in Pixinsight seems to have handled my lack of colour data reasonably well.

Quattro 8s, ASI 1600, EQ6-R, guided using ASI 120mm through the ZWO OAG.

Lum 96 x 5mins at gain 0 totalling 8 hours - weighted and drizzled in Pixinsight (~0.49" / pp)

RGB 9 x 5mins at gain 0, totalling 45mins per channel stacked in DSS.

Data was captured in Berkshire about 5 miles east of Reading ~ Bortle 5 skies

Comments & critique welcome

- I have some odd diffraction patterns around the stars caused by my secondary mirror heater sticking into the light path - currently tailor making a new one. Wasn't sure if I should resample it back to the original resolution which looks cleaner, but I find myself zooming in naturally to this resolution. Will probably look at the colour balance and saturation again later once I've had a break.

Thanks for looking

Original
B
Final
C

B

Description: Tweaked the colour, looks better!

Uploaded: ...

C

Description: Less green, more saturation!

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	3433612
PixInsight job	4FJDG6TZXHFURIAE04IIXSX2791LJM8C
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	14h03m15s.187
RA (top/left)	14h01m30s.562
RA (top/right)	14h01m53s.817
RA (bottom/right)	14h04m58s.452
RA (bottom/left)	14h04m37s.602

Dec (center)	+54°21′29″.71
Dec (top/left)	+54°37′56″.39
Dec (top/right)	+54°02′30″.39
Dec (bottom/right)	+54°04′56″.60
Dec (bottom/left)	+54°40′23″.70

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M101 LRGB Quattro 8s

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M101 LRGB Quattro 8s

M101 LRGB Quattro 8s

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