Cat's Eye Nebula, NGC 6543 - Hubble Telescope (Rudy Pohl)

Cat's Eye Nebula, NGC 6543 - Hubble Telescope

APOD - May 1, 2019 ........ My first APOD so I'm pretty excited.

Since having given up astro-imaging for health reasons and selling my gear, I am finding real joy in processing some of Hubble's amazing image data such as this one, the Cat's Eye Nebula also known as NGC 6543. I am grateful that NASA has given the public free access to their Hubble Legacy Archive which is chucked full of amazing stuff! Thank you NASA!

The Cat's Eye Nebula was one of the first planetary nebulae to be discovered and is one of the most complex planetary nebulae ever seen. Planetary nebulae form when Sun-like stars gently eject their outer gaseous layers, creating amazing shapes. The Cat's Eye Nebula, also known as NGC 6543, is a visual "fossil record" of the dynamics and late evolution of a dying star. It is estimated to be 1,000 years old. (Technical info from NASA Hubble Space project)

Data acquisition: Hubble Space Telescope (downloaded from the Hubble Legacy Archive)

Data preprocessing: Chandra X-Ray Data at Harvard University

Data processing: Rudy Pohl

I downloaded pre-processed data from: chandra.harvard.edu/photo/openFITS/multiwavelength_data.html

Colour mapping/channel combination done in Pixinisght using Pixelmath:

- NGC 6543 Chandra X-ray (Magenta)

- NGC 6543 Hubble Optical - ACS F502N (Blue)

- NGC 6543 Hubble Optical - ACS F505N (Green)

- NGC 6543 Hubble Optical - ACS F658N (Red)

Software:

Pixinsight 1.8, Photoshop CS5

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 failed
Started	...
Astrometry.net job	3064842
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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