The Bubble Nebula is a beautiful example of gas being expelled into space by a giant  star (center) about 40 times the mass of our sun.  The bubble is not uniform, likely due to its encounter with existing gas and dust of differing density.  The gas is expanding at 4 million miles per hour and is about 4 light years (24 trillion miles) across.  The Bubble Nebula is in the constellation Cassiopeia NGC 7635 and has the following statistics:  RA: 23h 20m 40.0s, Dec: +61° 12' 00", Size: 16.0'x6.0', Class: E.

Optics:
Camera:
Exposure:

Celestron C11 F/10 (2800mm Focal Length)
SBIG ST10XME with Adaptive Optics
LRGB = 240:60:50:70 minutes

Date:
Location:
Imager:

October 21-22, 2005
Columbus, Texas
Kent E. Biggs