M101: Pinwheel Galaxy, Yet Again (drblevy13)

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

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M101: Pinwheel Galaxy, Yet Again

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M101: Pinwheel Galaxy, Yet Again

Since September of 2020, which was just about when I began astrophotography, I think I have imaged M101 on five separate occasions and reprocessed the data easily over a dozen times. It has to be one of my favorite objects, and I can't help but point the scope to it when it's overhead just to see... what can I get out of it this time?

Here is my latest attempt. This time, my biggest concentration was precision guiding. I really tried to tack down my sky model and PhD2 guiding as much as possible. Average for this attempt was between 0.3 - 0.4" RMS guiding error in PhD2 with a 6" RMS pointing model on the 10 Micron. This allowed me to see that M101 actually has quite a few very small galaxies off in the distance; be sure to zoom in so you can see for yourself!

I really hope you enjoy seeing this as much as I did shooting it. This object for me really is a labor of love!

Please note: The following tables are updated every 24 hours.

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	7345721
PixInsight job	QQGVW8BGO80NHQB9II4542WU8QC5AP58
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m16s.179
RA (top/left)	14h01m20s.549
RA (top/right)	14h00m45s.869
RA (bottom/right)	14h05m10s.183
RA (bottom/left)	14h05m47s.541

Dec (center)	+54°21′19″.11
Dec (top/left)	+54°37′54″.95
Dec (top/right)	+54°12′37″.18
Dec (bottom/right)	+54°04′36″.19
Dec (bottom/left)	+54°29′49″.27

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M101: Pinwheel Galaxy, Yet Again

M101: Pinwheel Galaxy, Yet Again

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M101: Pinwheel Galaxy, Yet Again

M101: Pinwheel Galaxy, Yet Again

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