There are many worlds and many systems of Universes existing all at the same time, all of them perishable.

— Anaximander 546 BC

Bubble In Cassiopea

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

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

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

Bubble In Cassiopea