The Blue Horsehead nebula, in the constellation Scorpio. This is a reflection nebula and is illuminated for us by the star Nu Scorpii. The nebula is a very faint magnitude 8, this picture was taken with a camera and telephoto lens from a very dark location in the Rio Grande national forest in Colorado.

Olympus em1 mark iii, Olympus 40-150 pro lens at 150 mm. F2. 8. Multiple 2 minute exposures, the camera was tracked with Sky Watcher Star Adventurer.

About 75 2 minute exposures were stacked in Deep Sky Stacker and the result was processed in Pixinsight.