Exposures:  12 x 10 min (total = 2 hrs) through 3 nm Ha filter 
                   FOV =  15.6 x 14.7 arc minutes 
                   Located 11,000 light years away, the bubble nebula is the created by radiation from the hot massive hot young   central star. The nebula   happens to be near a giant molecular cloud which contains the expanding bubble while being excited by the hot central star causing the bubble to glow.
                   Back to Images