NGC6543 (The Cat’s Eye Nebula) (Randal Healey)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: IC 4677 · NGC 6543

NGC6543 (The Cat’s Eye Nebula), Randal Healey

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NGC6543 (The Cat’s Eye Nebula)

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NGC6543 (The Cat’s Eye Nebula)

The Cat’s Eye Nebula is a famous planetary nebula located in the northern constellation Draco. The nebula’s designation in the New General Catalogue is NGC 6543.

The Cat’s Eye is one of the most structurally complex nebulae known. It was formed around 1,000 years ago when a hot, bright central star expelled its outer envelope. It is sometimes also known as the Sunflower Nebula or the Snail Nebula. It lies at a distance of 3,300 light years from Earth.

The Cat’s Eye Nebula is easy to observe from northern latitudes as it is located almost exactly in the direction of the North Ecliptic Pole. The nebula appears as a diffuse blue-green disk crossed by an s-shaped brown curve, with an intricate circular structure at the inner region. The nebula’s core has an apparent size of 20” and a high surface brightness.

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Suburban Astrophotography
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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	3138388
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC6543 (The Cat’s Eye Nebula)

NGC6543 (The Cat’s Eye Nebula)

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Image Index:

Contribution Index (beta):

NGC6543 (The Cat’s Eye Nebula)

NGC6543 (The Cat’s Eye Nebula)

Equipment

Acquisition details

Description

Comments

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Sky plot

Histogram

In these public groups

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