Planetary nebula IC 5148 (Paul Muller)

Celestial hemisphere: Southern · Constellation: Grus (Gru) · Contains: IC 5148 · PK002-52.1

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Planetary nebula IC 5148

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Planetary nebula IC 5148

If you've got really good eyesight, you'll be able to make out the donut shape of IC 5148 just over 3000 light years away. And by good eyesight I mean, eyes the size of Keck's :-)

The first recorded discovery of this object nestled away in the constellation of Grus (The Crane) was by Australian astronomer Walter Gale all the way back in 1894, well before Keck and digital imaging, which makes the discovery even more amazing.

This little (and by little I mean from edge to edge it would stretch nearly all the way to Proxima Centauri!) planetary nebula is in fact massive and getting massiver (not a real word) at the rate of 50 kilometres a second, meaning that in 1.3 million years our great ancestors (or the cockroaches) will be hit by a shockwave of hydrogen and oxygen ions wiping out, well pretty much nothing because by that stage it will be so dispersed as to be barely detectable.

Part of my passion are small distant fuzzies and this certainly qualifies, notoriously difficult to get any detail out of, this is a few hours of data (hence the poor SNR) very lightly processed in APP during what will be the start of an annual journey to build up a more detailed picture of this incredible beast.

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	Advanced success
Started	...
Astrometry.net job	4929934
PixInsight job	NACUX7UTQBK9FT6IYVUSZFKEGLM47NT7
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h59m32s.977
RA (top/left)	21h58m31s.272
RA (top/right)	22h00m35s.795
RA (bottom/right)	22h00m35s.127
RA (bottom/left)	21h58m30s.162

Dec (center)	-39°22′57″.46
Dec (top/left)	-39°09′46″.13
Dec (top/right)	-39°09′54″.87
Dec (bottom/right)	-39°36′08″.32
Dec (bottom/left)	-39°36′00″.71

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Planetary nebula IC 5148

Planetary nebula IC 5148

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Planetary nebula IC 5148

Planetary nebula IC 5148

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