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Contains:  B144, Sh2-101
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The Tulip Nebula, 


            Gabe Shaughnessy
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The Tulip Nebula

Technical card

Dates:June 27, 2018July 2, 2018July 10, 2018

Ha 3nm: 15x900" bin 1x1
Astrodon LRGB CCD Imaging Filters (E-Series), Gen2: 45x300" bin 1x1

Integration: 7.5 hours

Avg. Moon age: 19.74 days

Avg. Moon phase: 64.59% job: 2172411

RA center: 19h 59' 57"

DEC center: +35° 19' 2"

Pixel scale: 1.020 arcsec/pixel

Orientation: -3.470 degrees

Field radius: 0.580 degrees

Resolution: 3188x2564

Data source: Backyard


Resembling a tulip, Sharpless 101 is an emission nebula in Cygnus about 6000 ly away. To the right of it is Cygnus X-1, a very strong X-ray source and widely believed to be a Black Hole candidate. The visible star is SAO69181 and orbits the black hole. The in-falling matter from the star is heated to millions of degrees, producing X-rays.

This image is a combination of H-alpha and RGB.



Gabe Shaughnessy
License: Attribution-NonCommercial Creative Commons

Sky plot

Sky plot


The Tulip Nebula, 


            Gabe Shaughnessy