I’ve always liked Barnard’s Loop, this glowing red, but invisible to the naked eye, ring around a large part of the constellation of Orion. In the picture, the three bright stars in the upper right are the belt of Orion – Alnitak, Alnilam, and Mintaka. The bright star at the bottom is one of his knees – Salph. Toward the right are the Orion Nebula, visible to the naked eye and next to Alnitak, the Flame and Horsehead Nebulae. Finally, that big red arc on the left and bottom is a part of Barnard’s Loop. This was just an hour’s worth of 60 second subs with my Samyang 135mm lens and ASI2600MC Pro camera from a Bortle 2 site.
