"Man will never reach the moon regardless of all future scientific advances."

— Dr. Lee De Forest

Bubble In Cassiopea

By marzulloj at Sun, 09/01/2013 - 10:09am
Bubble In Cassiopea

The bubble nebula in Cassiopea, also known as Caldwell 11.

Two hours H Alpha exposure through a 5" refractor and Starlight express CCD camera.