PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus (Herbert_West)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg)

PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus, Herbert_West

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PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus

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PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus

PN G75.5+1.7 is a planetary nebula with a radius of about 5 light years located about 4,000 light years from Earth. Assuming an expansion rate of 35 km/s, the nebula is about 22,000 years old - a fairly young object. This nebula is quite visible in both the Ha and OIII bands. It isn't overly faint, it's located in Cygnus, where many an astrophotographer dwells, so the story of its discovery is surprising. It was discovered in 2008 by amateur astronomer Dave Jurasevich. The first image of it was taken with the AP 160 mm refractor in the Ha band on June 19, 2007.

It's one of my early bicolor (HO) works. Imaging it was a pleasure, as was the processing, even though I had some issues with the collimation and my processing skills were not that great.

However, this is one of my photos that I like. The background is a riot but the soap bubble in the middle just calmly floats among it.

Workflow:
A. Pixinsight:
1. DynamicCrop,
2. DynamicBackgroundExtraction,
3. NoiseXterminator,
4. Starnet 2,
5. CloneStamp to fix some Starnet2 artifacts,
6. GeneralizedHyperbolicStretch.

B. Photoshop:
1. Gradient Map to assign colors to Ha and OIII,
2. Tweaked contrast, saturation, colors, etc.
3. Slight TopazDenoise polish with masks to avoid the "sharpening" magic,
4. Resize 70%.

Stars made by blending Ha and OIII (R=Ha, G=.8xO+.2xHa, B=O) and tweaking their color to make them RGB-like.

Poland
Planetary Nebulae
Unique or Unusal Deep Sky Targets
Hydrogen and Oxygen Narrowband Only!

Herbert's Funnies

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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	8239186
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus

PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus

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PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus

PN G75.5+1.7 - Soap Bubble - Planetary nebula in Cygnus

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