M101 - Pinwheel Galaxy - HaLRGB (MSFFT)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: HD122007 · HD122149 · HD122200 · HD122471 · HD122545 · HD122865 · HD123518 · 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 5475 · NGC 5477 · NGC 5484 · NGC 5485 · NGC 5486 · Pinwheel galaxy

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M101 - Pinwheel Galaxy - HaLRGB

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M101 - Pinwheel Galaxy - HaLRGB

Image of Messier 101, the Pinwheel Galaxy in Ursa Major. This image uses nearly 32 hours of integration from April through June 2022. Given that I have a previous M101 image from a year prior, the comparison should show how a new (mono) camera and both my own skills have progressed. The data for this image is completely new from the 2021 collection though I should probably go back and combine them. Imaged from approximately Bortle 7 backyard.

Processing in Pixinsight included calibration, integration, DBE on each filter, linear fit (to Green channel), RGB channel combination, photometric color calibration, pixel math to add Ha, background neutralization, and finally an arcsinh stretch to round out linear processing. Non-linear processing included combination of (nonlinear) luminance, some curve stretches for contrast and saturation.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Star trails
Northern lights
Noctilucent clouds
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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.
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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	6141515
PixInsight job	ZEXK1O8RE08DPJNSH5DV95OTW2YU78QQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m13s.63
RA (top/left)	14h09m52s.70
RA (top/right)	14h09m00s.43
RA (bottom/right)	13h56m07s.97
RA (bottom/left)	13h57m50s.56

Dec (center)	+54°20′47″.1
Dec (top/left)	+53°01′12″.7
Dec (top/right)	+55°46′40″.6
Dec (bottom/right)	+55°38′56″.6
Dec (bottom/left)	+52°53′59″.3

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M101 - Pinwheel Galaxy - HaLRGB

M101 - Pinwheel Galaxy - HaLRGB

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Image Index:

Contribution Index (beta):

M101 - Pinwheel Galaxy - HaLRGB

M101 - Pinwheel Galaxy - HaLRGB

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Description

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