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NGC 7635 - Bubble Nebula      Image down sampled 0.5x, click on image for full scale
Penryn, California
August 2008
M 250 @ f9.3  (ag, ST-4)
ST-10XME LRGB - 10 minute subs

The bubble is shaped by radiation from the extremely hot star Wolf-Rayet star located on the left edge of the bubble.  Wolf-Rayet stars periodically shed their shells.  Note the fainter and larger bubble remnant to the right.

The bubble is approximately 10 light years in diameter and is  approximately 11,300 light years distant.