M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha (Derek Spratt)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 106 · NGC 4217 · NGC 4220 · NGC 4226 · NGC 4232 · NGC 4248 · NGC 4258

M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha, Derek Spratt

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M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha

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M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha

Excellent guiding at 0.4-0.6AS/pixel with moderately low humidity.

This was a test of how much detail could be pulled from faint DSOs when there was a new moon up while imaging from my backyard Urban Bortle7 skies - I left the scope out for 4 long winter nights to see what could be captured with an RC8 + FF + ASI6200MM full frame camera, sporting a very useful 1.5 degree FOV at 1624mm FL & F/8.2.

The answer is in the image above - a fair amount of detail with only modest gradients and vignetting that could be processed out.

The Astrobin plate-solving highlights 7 galaxies but I can spot a few more - impressive urban results under less than ideal conditions.

There are 2 versions of this image ...

M106 Galaxy Group in LRGB+Ha: https://www.astrobin.com/z07uaw/
M106 Galaxy Group in Ha only: https://www.astrobin.com/lghel3/

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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	Basic success
Started	...
Astrometry.net job	9529517
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha

M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha

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Image Index:

Contribution Index (beta):

M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha

M106 (NGC4258), NGC4248, NGC4226, NGC4217, NGC4231, NGC4232 & NGC4220 in Ha

Equipment

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