M31, M32 and M110 @ 300mm (Astrotracer) (AlenK)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Great Nebula in Andromeda · M 110 · M 31 · M 32 · NGC 205 · NGC 221 · NGC 224 · The star 32And · The star νAnd

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M31, M32 and M110 @ 300mm (Astrotracer)

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M31, M32 and M110 @ 300mm (Astrotracer)

The 300mm lens was stopped down to f/5.6 for roughly half the exposures and to f/6.7 for the rest. (I was testing to see if there was a noticeable difference in star shape and/or CA. There was not.) Tracking was done internally with the camera's Astrotracer feature, with the lens mounted directly to a tripod (no external tracker required). No darks, bias or flats were used.

The view here has been inverted compared to how the area is usually seen in the northern hemisphere (as it rises in the east) but that is my preferred orientation since it makes the spiral nature of M31 more obvious to my eyes.

This was just a test, quickly processed. The image needs better CA reduction and much more careful gradient reduction. It could also use some noise reduction; none has been applied.

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Distribution of astrophotographers

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	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.

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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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Status	Basic success
Started	...
Astrometry.net job	3258547
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M31, M32 and M110 @ 300mm (Astrotracer)

M31, M32 and M110 @ 300mm (Astrotracer)

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Image Index:

Contribution Index (beta):

M31, M32 and M110 @ 300mm (Astrotracer)

M31, M32 and M110 @ 300mm (Astrotracer)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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