The Grus Quartet in RGB (Ian Parr)

Celestial hemisphere: Southern · Constellation: Grus (Gru) · Contains: NGC 7552 · NGC 7582 · NGC 7590 · NGC 7599

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The Grus Quartet in RGB

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The Grus Quartet in RGB

Located in the Grus Constellation, are all 4 spiral galaxies in the NGC 7582 group, the Grus Quartet, also known as the Grus group
Top right in this image is NGC 7552 a face on spiral. In the Middle is NGC 7582 with the smaller NGC 7590 below to the right and the right most is NGC 7599.
The most central, at a distance of circa 60 million light years from Earth, is NGC 7582 which is a type 2 Seyfert galaxy, due to the fact that the galaxy has an extremely bright supermassive central black hole which is about 10 million times the mass of our sun.

I have been scrambling to extract the last ounce of RGB data from the recent run of new moon clear but hot nights, before the first quarter moon sends me back to Narrow Band and daylight saving kicks in next month, or worse, bush fires make a mess of everything. As I live less from 2 kms from where 201 houses were lost in 2013 and escaped unscathed from the worst fires in 5000 years in 2019 I really can't take much for granted heading into summer. If it gets too hot I will pack everything up and probably put it into storage. That said so far the heat relflective paint on my Pump Shed Observatory is a miracle keeping the temperature about 5 degrees below ambient whereas it used to hit 50C!

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Please note: The following tables are updated every 24 hours.

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	8505977
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The Grus Quartet in RGB

The Grus Quartet in RGB

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Image Index:

Contribution Index (beta):

The Grus Quartet in RGB

The Grus Quartet in RGB

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

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