M101 "Pinwheel" Galaxy & Friends (2022) (Mark Germani)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: HD122471 · HD122865 · M 101 · NGC 5422 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · NGC 5473 · NGC 5474 · NGC 5477 · NGC 5484 · NGC 5485 · NGC 5486 · Pinwheel galaxy

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M101 "Pinwheel" Galaxy & Friends (2022)

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M101 "Pinwheel" Galaxy & Friends (2022)

Third time's the charm! The first time I imaged M101 I was working with an out-of-spec flattener, the second time I had the right flattener but less than 3 hours' integration and no broadband light-pollution filter. This time, I've added the 3 hours from last year with the right flattener to more than 7 hours with the Optolong L-Pro for over 10 hours of integration time.

I think I actually might be more excited about dwarf spiral galaxy NGC 5474 (I love how it's interacting with M101, and the core has been shifted relative to the disc) but overall, there is a lot more detail and luminance this time around. I kept nearly all of the subs.

Broadband under Bortle 7/8/9
iOptron Skyguider Pro
Canadian Astrophotography
Pacific Northwest Astrophotographers
Musical Imagers
William Optics ZenithStar Z61/Z81
DSLR/Mirrorless Imagers from the World
DSLR and mirrorless astrophotography
Light Polluted skies
Optolong L-Pro filter
The refractors!

Past Projects

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	5889809
PixInsight job	CP0WFLPNYIYSE4OIT9YG64RGQ2R756HS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m15s.42
RA (top/left)	14h06m36s.18
RA (top/right)	14h07m36s.17
RA (bottom/right)	13h59m46s.32
RA (bottom/left)	13h59m04s.84

Dec (center)	+54°22′19″.9
Dec (top/left)	+53°29′27″.5
Dec (top/right)	+55°09′54″.8
Dec (bottom/right)	+55°14′57″.2
Dec (bottom/left)	+53°34′16″.4

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M101 "Pinwheel" Galaxy & Friends (2022)

M101 "Pinwheel" Galaxy & Friends (2022)

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M101 "Pinwheel" Galaxy & Friends (2022)

M101 "Pinwheel" Galaxy & Friends (2022)

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