SH2-140 in HaRGB (Nicolas MARTINO)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 18 Cep · 19 Cep · 20 Cep · 25 Cep · 26 Cep · 30 Cep · HD210386 · HD210808 · HD211029 · HD211123 · HD211242 · HD211283 · HD211758 · HD211781 · HD211810 · HD211880 · HD212042 · HD212169 · HD212365 · HD212413 · HD212495 · HD212730 · HD212882 · HD213023 · HD213086 · HD213099 · HD213242 · HD213353 · HD213405 · HD213631 · And 32 more.

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SH2-140 in HaRGB

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SH2-140 in HaRGB

To compose the HaRGB image, I used the Optolong L-eXtreme filter to extract the H-Alpha signal, and for the colour signal I didn’t use any filter.
Details of the H-Alpha acquisition :45 x 600sL-eXtreme filter from Optolong (extraction of the red layer to recover the H-Alpha signal)Acquisitions made at home, under a Bortle 5 quality sky (Magniture 20.35) Details of the RGB acquisition :70 x 300sWithout filterAcquisitions made at the butte de Montsec, under a Bortle 3 quality sky (Magnitude 21.6)

The processing was quite complex, so I asked my friends Yann SAINTY and Christophe VERGNES (from our Team Stellae Orientis) to help me to provide the best possible result.

Many thanks to them as usual!

Astrophotographes (France)
Optolong L-eXtreme filter
Takahashi FSQ 85 EDX
Team Stellae Orientis
Optolong L-Ultimate filter
ZWO ASI2400MC Users

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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
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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	Advanced success
Started	...
Astrometry.net job	6010397
PixInsight job	CG96LM5U5NKFTKL8WRMK7VW68ZP30OLB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h21m52s.76
RA (top/left)	22h26m00s.33
RA (top/right)	22h00m10s.33
RA (bottom/right)	22h18m24s.53
RA (bottom/left)	22h44m29s.40

Dec (center)	+63°26′49″.2
Dec (top/left)	+65°57′29″.7
Dec (top/right)	+62°44′18″.8
Dec (bottom/right)	+60°55′34″.6
Dec (bottom/left)	+63°56′24″.7

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SH2-140 in HaRGB

SH2-140 in HaRGB

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SH2-140 in HaRGB

SH2-140 in HaRGB

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