Crescent and "Soap Bubble" ( Achim Schaller )

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888

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Crescent and "Soap Bubble"

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Crescent and "Soap Bubble"

Imaging Telescopes Or Lenses: DIY 12" F/4 Newtonian
Imaging Cameras: Sony A7RIV (modified) · ZWO ASI294MM Pro
Filters: IDAS LPS-P2 2" · Sense-Tech InnovationCompany (STC) H-alpha 7nm 2" · Sense-Tech InnovationCompany (STC) OIII7nm 2"
Accessories: TS-Optics NEWTON Coma Corrector 0.85x Reducer - big Sensors - 3" connection (TSNTRed) · Viltrox EF-EOS M2 Speed Booster
Software: DxO Image Science NIK Collection · Nikita Misiura StarNet · Pleiades Astrophoto PixInsight · Russell Croman Astrophotography BlurXTerminator · Topaz Labs DeNoise AI

Dates:: Aug. 21, 2023 · Aug. 22, 2023
Frames:: IDAS LPS-P2 2": 5×180″(15′) ISO400 f/3 bin 1×1
Sense-Tech Innovation Company (STC) H-alpha 7nm 2": 42×180″(2h 6′) (gain: 120.00) f/1 -12°C bin 2×2
Sense-Tech Innovation Company (STC) OIII 7nm 2": 20×180″(1h) (gain: 119.00) f/2.4 -12°C bin 2×2
Integration:: 3h 21′
Avg. Moon age:: 5.07 days
Avg. Moon phase:: 26.52%
Bortle Dark-Sky Scale:: 3.00

Basic astrometry details

Astrometry.net job: 8367936

RA center: 20h13m36s.7

DEC center: +38°09′43″

Pixel scale: 1.360 arcsec/pixel

Orientation: 146.094 degrees

Field radius: 0.870 degrees

Resolution: 3840x2545

File size: 2.2 MB

Locations: Achim Schaller, Marzell, BW, Germany

Data source: Backyard

Struggling with clouds and guiding errors I finished the image (at least for this season) with only 3h exposure time.
Used the ASI 294mm pro for ha and oiii in combination with the 3" 0.85x coma corrector and the Viltrox 0.72x SpeedBooster.
The stars come from the Sony A7R4.

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

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.
Dismissals 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	8367936
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Crescent and "Soap Bubble"

Crescent and "Soap Bubble"

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Crescent and "Soap Bubble"

Crescent and "Soap Bubble"

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