Rosette Nebula, by Dwight Talley

The Rosette Nebula imaged in hydrogen alpha and oxygen III light by Dwight Talley.

15 x 20 minutes Ha, 15 x 20 minutes OIII, AT65EDQ and QSI 660 camera, processed in Pixinsight and Photoshop.

More at https://en.wikipedia.org/wiki/Rosette_Nebula