The Crescent Nebula

This is the Crescent Nebula in the constellation of Cygnus, photographed over four nights in May 2023. NGC 6888 is the result of the outer layers of the old star at its centre - known as a Wolf-Rayet star - being blasted out by a powerful stellar wind. The shape that we see is about 25 light years across and 5,000 light years away from Earth.

My picture involved 9.5 hours of sub-exposures plus calibration frames, taken in Colchester, England, in May 2023 on a modified Nikon D750 DSLR, Sky-Watcher Explorer 150p, EQ5 Pro, via Stellarmate in Kstars/Ekos. Stacked in AstroPixelProcessor, cropped and adjusted in Photoshop and Lightroom.