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Tulip Nebula, Sh2-101

Technical card

Resolution: 2639x1840 job: 2784169

RA center: 299.807 degrees

DEC center: 35.407 degrees

Pixel scale: 1.249 arcsec/pixel

Orientation: 359.534 degrees

Field radius: 0.558 degrees

Locations: Mount Whitney, Ágasvár, Hungary; Home observatory, Vecsés, , Hungary

Data source: Traveller


The Swan Tulip hides a dark secret.
Last summer I photographed the SH2 101, more commonly known as the Tulip Fog in the Summer Milky Way, more precisely in the Swan constellation. The processing was a bit delayed, but I managed to reach my main goal, to find traces of the Cygnus X-1 black hole with amateur equipment alongside the Tulip Nebula.
In addition to the visual experience of the picture, it is the bluish arc on the right side of the photo. This arc of ionized gas is a shock wave, which we know is a black hole (Cygnus X-1) from which we can visually see the material congestion of a relativist jet that breaks out due to material transfer. While the black hole itself cannot be seen by observing the effects on its environment, it indirectly betrayes itself.



Zoltán Bach
License: None (All rights reserved)

Sky plot

Sky plot


Tulip Nebula, Sh2-101, 


            Zoltán Bach