M101 a galaxy in Ursa Major (RonAdams)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5457 · NGC 5477

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M101 a galaxy in Ursa Major

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M101 a galaxy in Ursa Major

When I went outside I did not intend to image this object. I intended on imaging NGC 5128.

However when I went outside NGC 5128 was not in a position where I could see it. I decided to

image M101 while waiting for NGC 5128 to move into a position where I could image it.

For some reason the signal to noise ratio was not very good when I imaged M101. I had a lot more

noise than I usually have and most of my processing time was spent trying to rescue as much

data on the object as I could get and negate the noise at the same time. I've spent a night

and two days processing and reprocessing this image trying to get something I'm pleased with.

I finally became weary of the frustration and said that's it. I'm done and it is what it is. Please

enjoy my most recent image of M101.

Original
Final
B

B

Description: Removing what I guess is a stacking/processing artifact that I didn't notice until now. I've got to really strain my eyes to see it on my monitor but in Astrobin it's obvious.

Uploaded: ...

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	Distinct awarded users	Total awarded images
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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
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Star trails
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Distribution of data sources

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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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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	Basic success
Started	...
Astrometry.net job	2060252
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M101 a galaxy in Ursa Major

M101 a galaxy in Ursa Major

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Image Index:

Contribution Index (beta):

M101 a galaxy in Ursa Major

M101 a galaxy in Ursa Major

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

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