Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  B144  ·  Sh2-101
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The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock, 



    
        

            Luca Marinelli
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The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock

Getting plate-solving status, please wait...
The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock, 



    
        

            Luca Marinelli
Powered byPixInsight

The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock

Imaging telescopes or lenses: Teleskop Service ONTC 10" f4 Newton

Imaging cameras: Atik 383L+ Monochrome

Mounts: Astro-Physics Mach-1 GTO CP4

Guiding telescopes or lenses: Teleskop Service ONTC 10" f4 Newton

Guiding cameras: Starlight Xpress Ultrastar Mono

Software: Seqence Generator Pro  ·  Starnet ++  ·  Photoshop CC  ·  PIXINSIGHT 1.8  ·  PHD2 Guiding PHD2 v2.6.5

Filters: Astrodon Narrowband 3nm SII  ·  Astrodon Narrowband 3nm Ha  ·  Astrodon Narrowband 3nm OIII

Accessory: QHYCCD OAG-M  ·  Tele Vue Paracorr Type 2  ·  Pegasus Astro Ultimate Power Box  ·  QHYCCD QHYCFW3-M


Dates:July 12, 2019July 24, 2019Aug. 4, 2019

Frames:
Astrodon Narrowband 3nm Ha: 28x1200" (9h 20') -20C bin 1x1
Astrodon Narrowband 3nm OIII: 41x1200" (13h 40') -20C bin 1x1
Astrodon Narrowband 3nm SII: 30x1200" (10h) bin 1x1

Integration: 33h

Darks: ~50

Flats: ~20

Bias: ~100

Avg. Moon age: 12.02 days

Avg. Moon phase: 50.88%

Bortle Dark-Sky Scale: 5.00


Astrometry.net job: 2860095

RA center: 19h 58' 53"

DEC center: +35° 24' 14"

Pixel scale: 0.974 arcsec/pixel

Orientation: 0.529 degrees

Field radius: 0.547 degrees


Resolution: 3267x2379

Locations: Home Observatory, Schenectady, New York, United States

Data source: Backyard

Description

The Tulip Nebula (Sh2-101) is a HII emission nebula located in the constellation Cygnus at a distance of about 6,000 light years from Earth. It is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. Cygnus X-1 is the brighter of the two stars at the end of the lower petal of the Tulip.

Cygnus X-1 was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources seen from Earth. It remains among the most studied astronomical objects in its class. The compact object is now estimated to have a mass about 14.8 times the mass of the Sun and has been shown to be too small to be any known kind of normal star, or other likely object besides a black hole.

Cygnus X-1 belongs to a high-mass X-ray binary system that includes a blue supergiant variable star designated HDE 226868[18] which it orbits at about 0.2 AU. A stellar wind from the star provides material for an accretion disk around the X-ray source. Matter in the inner disk is heated to millions of degrees, generating the observed X-rays. A pair of jets radiating from the accretion disk of the black hole are colliding with the interstellar material to form the curved shock front (in blue) at the right of the Tulip.

Sources:

https://en.wikipedia.org/wiki/Cygnus_X-1

https://en.wikipedia.org/wiki/Sh2-101

https://www.skyandtelescope.com/online-gallery/tulip-nebula-with-cygnus-x-1-bow-shock/

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    The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock, 



    
        

            Luca Marinelli
    Original
    The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock, 



    
        

            Luca Marinelli
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  • Final
    The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock, 



    
        

            Luca Marinelli
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B

Description: Opened dark shadows lightly to optimize display on narrower-gamut monitors.

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Description: Added RGB star color.

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The Tulip Nebula (Sh2-101) and Cygnus X-1 Bow Shock, 



    
        

            Luca Marinelli