Pinwheel Galaxy (M101) from < 1" seeing (KuriousGeorge)

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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Pinwheel Galaxy (M101) from < 1" seeing

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Pinwheel Galaxy (M101) from < 1" seeing

Sorry, I'm a little late to the M101 party. (-:

I wasn't planning on shooting M101 this year. But I changed my plans while working on NGC6340 and neighbors in Draco (Deep). The seeing was just too good to pass it up.

I could only get good results from 9:15 PM to around 11:30 PM. So it took over a week to collect what you see here.

The 32 15-minute luminance subs were between 1.42" and 2.32". Average was 2.03" before deconvolution. Given seeing is usually measured as described here, we suspect this is seeing under 1".

So here's my late 2020 M101 contribution to Astrobin – with a little touch of Ha to finish it off. (-:

Original
Final
C

C

Description: All-new processing using BlurX and NoiseX. The most noticeable improvement I see is in contrast. But that's a result of me using PI HDR rather than PS Shadows in the original version. Noise and resolution seem to be about the same.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	8637022
PixInsight job	R2G1RSHT9H41QPYK903810MGW1HZPZU9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m30s.963
RA (top/left)	14h01m42s.720
RA (top/right)	14h05m14s.871
RA (bottom/right)	14h05m20s.301
RA (bottom/left)	14h01m45s.674

Dec (center)	+54°23′50″.68
Dec (top/left)	+54°10′04″.81
Dec (top/right)	+54°09′23″.99
Dec (bottom/right)	+54°37′31″.55
Dec (bottom/left)	+54°38′12″.85

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Pinwheel Galaxy (M101) from < 1" seeing

Pinwheel Galaxy (M101) from < 1" seeing

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Pinwheel Galaxy (M101) from < 1" seeing

Pinwheel Galaxy (M101) from < 1" seeing

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