M101 | The PinWheel Galaxy (Kevin Morefield)

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 · NGC 5477 · Pinwheel galaxy · SS UMa · TYC3852-1069-1 · TYC3852-1108-1 · TYC3852-214-1 · TYC3852-267-1 · TYC3852-301-1 · TYC3852-468-1 · TYC3852-519-1 · TYC3852-521-1 · TYC3852-555-1 · TYC3852-738-1

Image of the day 03/31/2020

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M101 | The PinWheel Galaxy

Image of the day 03/31/2020

Powered byPixInsight

M101 | The PinWheel Galaxy

M101 presents itself fully face-on and that, combined with its large size makes it a treat to image. There are so many details to explore and tease out that it's hard to know where to stop.

This was processed twice, once with PI and one with CCDStack/PS. The PI version benefited from HDRMT and DBE and the CCDStack version had a warmer color balance that brought out the dark lanes nicely. I blended them 50/50 in Photoshop with the background being mostly from PI.

Ha was added to the blend. I shot OIII as well, but not enough to use without a large noise increase.

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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	3359477
PixInsight job	AZ7RCLSKS6NSARIJNUCV0G9F18YRIB3O
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	14h03m19s.182
RA (top/left)	14h02m58s.542
RA (top/right)	14h00m31s.745
RA (bottom/right)	14h03m39s.395
RA (bottom/left)	14h06m07s.542

Dec (center)	+54°22′19″.64
Dec (top/left)	+54°47′40″.00
Dec (top/right)	+54°14′50″.69
Dec (bottom/right)	+53°56′57″.59
Dec (bottom/left)	+54°29′33″.58

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Contribution Index (beta):

Image of the day 03/31/2020

M101 | The PinWheel Galaxy

Image of the day 03/31/2020

M101 | The PinWheel Galaxy

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Image Index:

Contribution Index (beta):

Image of the day 03/31/2020

M101 | The PinWheel Galaxy

Image of the day 03/31/2020

M101 | The PinWheel Galaxy

Equipment

Acquisition details

Description

Comments

Acquired at

Sky plot

Histogram

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