Patchick 4 Planetary Nebula (Albert Christensen)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg)

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Patchick 4 Planetary Nebula

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Patchick 4 Planetary Nebula

Patchick 4 (Pa 4) is a planetary nebula in constellation Cygnus. This nebula is very faint and was discovered by Dana Patchick, a member of the Deep Sky Hunter team in year 2005 by scanning the digital sky surveys (DSS). In 2018 it was spectroscopically confirmed to be a true planetary nebula.

A Planetary Nebula is an interesting and fascinating target. This one is especially so, and rarely imaged. After I first saw Peter Goodhew's beautiful image I knew I must give it a try. Being relatively new in this hobby I was not sure what to expect, but I had the feeling it would be a challenge. With an apparent diameter of 8' the image would require a significant crop, and would be pushed when photographed with a 620 mm focal length and a ASI 1600 MM camera. I decided to make the first image using bin1.

For what it is worth I am presenting the image with the data I have, and hope to add more at a later date (especially O3). Overall, I am satisfied with the results and expect a potential improvement, with additional data and procedures, with my existing equipment. My O3 did not show very well. Perhaps bin2 data would make an improvement or maybe I could get some of the neighborhood light pollution to go away. (wishful thinking).

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B

B

Description: Added 5 hours of O3 & reprocessed

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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	9931033
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Patchick 4 Planetary Nebula

Patchick 4 Planetary Nebula

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Image Index:

Contribution Index (beta):

Patchick 4 Planetary Nebula

Patchick 4 Planetary Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

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