Tulip Nebula (Dan Vranic)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B144 · Sh2-101

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Tulip Nebula

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Tulip Nebula

Saying goodbye to Cygnus for 2021..

Last time I shot this object, it was in very poor transparency and only for a little over an hour before weather soured.

As I prepare to start seeing some fall targets and changing some gear around for them as well, I decided to go after this as my final summer target. 42 x 10 minute sub exposures.

From Constellation Guide:

The Tulip Nebula is an emission nebula located in Cygnus constellation. It lies at an approximate distance of 6,000 light years from Earth and has diameter of about 70 light years. The HII region is called the Tulip Nebula because its shape resembles the form of a tulip and it has a reddish glow in long exposure photographs.

The emission from the Tulip Nebula is powered by ultraviolet radiation of the hot young star. In images, it can be seen near the nebula’s center.

The Tulip Nebula is located in the same region of the sky as the microquasar Cygnus X-1, the first galactic X-ray source widely believed to be a black hole. Cygnus X-1 consists of a star, HD 226868, and a very small high-mass object. The two orbit around each other with a period of 5.6 days. The object was one of the first ever candidates for a black hole.

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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.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
Astrometry.net job	4943820
PixInsight job	JPYESKMHIKEB29OL6SMC9Z6ANBMS28G7
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h00m09s.565
RA (top/left)	20h02m11s.940
RA (top/right)	19h58m14s.781
RA (bottom/right)	19h58m09s.304
RA (bottom/left)	20h02m03s.163

Dec (center)	+35°18′47″.54
Dec (top/left)	+35°43′00″.66
Dec (top/right)	+35°44′18″.74
Dec (bottom/right)	+34°54′27″.52
Dec (bottom/left)	+34°53′08″.51

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