NGC 7331 Group (rflinn68)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7331 · NGC 7335 · NGC 7337

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NGC 7331 Group

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NGC 7331 Group

NGC 7331 (also known as Caldwell 30) is a spiral galaxy about 40 million light-years away in the constellation Pegasus. It was discovered by William Herschel in 1784. NGC 7331 is the brightest member of the NGC 7331 Group of galaxies.

In spiral galaxies the central bulge typically co-rotates with the disk but the bulge in the galaxy NGC 7331 is rotating in the opposite direction to the rest of the disk. The current bulge may have formed from infalling material, however if it has been there since the formation of the galaxy then it would be difficult to explain how such a situation arose.--Wiki

This is the first of two test images using the CCDT67 with the 10RCT. Not too happy with the stars, both with the corners and the brighter stars having double spikes. I'm guessing I'm seeing microlensing from the 8300, but usually only see it when undersampled. Still work to do on the spacing with the telecompressor. I may look into getting a new camera just for the RC to use at 2000mm. The stars look very good at f/8 with the TSFlat2, even off axis, so I'm a bit hesitant to touch the collimation. I think its a spacing issue.

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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
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Star trails
Northern lights
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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.

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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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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	1192693
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 7331 Group

NGC 7331 Group

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NGC 7331 Group

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