Friday, Sep 6, 2024

The Tulip Nebula is part of a HII emission zone in the constellation of Cygnus. The region is densely populated with stars and on the upper right of the image, about halfway between the Tulip and the bright star Eta Cygni, located close to the corner, you can see the shock wave (represented in blue) generated by the star of about 40 solar masses that imploded to generate the black hole Cygnus X1. The presence of a dense region of interstellar dust to the right of the Tulip makes the sky darker and less densely populated with stars, while on the left the filamentary structure in Ha and Sii (in red-orange) is clearly visible, and it stands out on the cloud of Oiii (in light blue).