SH2-101; aka Tulip nebula (Dev (Dave) Prana)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: HD189474 · HD189528 · HD226900 · HD226909 · HD226918 · HD226919 · HD226938 · HD226946 · HD227005 · HD227018 · HD227027 · HD227059 · HD227060 · HD227072 · HD227073 · HD227080 · LBN 168 · LBN 171 · Sh2-101

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SH2-101; aka Tulip nebula

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SH2-101; aka Tulip nebula

Sh2-101 is a H II region emission nebula located in the constellation Cygnus. It is sometimes also called the Tulip Nebula because it appears to resemble the outline of a tulip when imaged photographically. It was catalogued by astronomer Stewart Sharpless in his 1959 catalog of nebulae. Wikipedia
Distance to Earth: 5,871 light years
Size: 70 light-years across
Equipment used: Celestron Evo 8" SCT on AVX mount, with ZWO 294MC Pro main cam and ZWO 120mini guidecam, 60mm guidescope, ASI Air Plus, Optolong L enhance filter, ZWO EAF, Bathinov mask, dew heater straps and powered by two Jackery units. Last night, epic data acquisition for 4 hours, yielded 4 full targets worth of data, and for Crescent nebula:
5 x 120sec light subs
20 x 180sec light subs
30 darks and 30 flats
Pre and Post processing done in Pixinsight, with touch-ups in Paintshop pro for clarity and vibrancy. Two versions, original stars deemphasized and Stars-less, enjoy!
Note: Very slight star trails due to guidescope flexure, DST vs SDT mismatch, or guiding rate (1X vs 0.5X) mismatch. Troubleshooting is underway on an earlier post and will update with resolution results.
Full resolution and coordinates on AStrobin:

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
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	6311985
PixInsight job	MSZB9JOU5L1DYOEBI4OC89QO0VCOEZ8U
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h59m55s.988
RA (top/left)	19h58m33s.403
RA (top/right)	19h58m53s.410
RA (bottom/right)	20h01m17s.999
RA (bottom/left)	20h00m59s.999

Dec (center)	+35°19′56″.20
Dec (top/left)	+35°38′41″.70
Dec (top/right)	+34°58′15″.39
Dec (bottom/right)	+35°01′06″.34
Dec (bottom/left)	+35°41′33″.27

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SH2-101; aka Tulip nebula

SH2-101; aka Tulip nebula

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SH2-101; aka Tulip nebula

SH2-101; aka Tulip nebula

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