Sh2-140 (estabrook)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 25 Cep · HD211029 · HD211242 · HD211880 · HD212365 · HD212730 · LBN 500 · LBN 505 · LDN 1201 · Sh2-140 · The star 25 Cep

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Sh2-140

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Sh2-140

Sh2-140. This emission nebula in Cepheus isn't exactly a show-stopper, but it was new to me when I saw a couple fellow Astrobinners' images in early August. Slightly off the beaten path, and very well-positioned from my vantage point--definitely worth giving it a go. This image combines about 7 hours dual-narrowband data and about 2 hours of broadband stars added for good measure. I wish I could have drawn out the dark nebulosity a bit more, but such are the hazards of Bortle 8 skies. A fun project overall.

(Captured: Askar FRA500, AM5, ASI183MC Pro, Optolong L-eNhance filter, Optolong UV/IR Cut Filter. Processed: AstroPixelProcessor, PixInsight, StarXterminator, NoiseXterminator, BlurXterminator, Blanshan/Cranfield Star Reduction Script)

Optolong L-eNhance filter
The OSC Club (One Shot Camera)
ZWO ASI183/QHY183
Light Polluted skies
Virginia Astronomers and Astrophotographers
ZWO ASIAIR PRO USERS
NOVAC

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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	8406949
PixInsight job	8LQMA8SFB1HY25WN6WLQ87QY6CJOLUCM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h18m17s.804
RA (top/left)	22h12m15s.970
RA (top/right)	22h25m14s.654
RA (bottom/right)	22h24m34s.912
RA (bottom/left)	22h11m09s.390

Dec (center)	+63°11′19″.42
Dec (top/left)	+62°37′00″.96
Dec (top/right)	+62°46′01″.69
Dec (bottom/right)	+63°44′40″.90
Dec (bottom/left)	+63°35′21″.57

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Sh2-140

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Sh2-140

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