DBubble Nebula

image_28-2041cee


Jaspal Chadha

London

Altair Astro RC 250TT Scope
QSI 690 CCD
Ioptron CEM 60

Ha 5 x 1200 seconds
SII 1 x 1800 seconds
OIII 2 x 1200 seconds

apparition has a surprisingly familiar shape. Cataloged as NGC 7635, it is also known simply as The Bubble Nebula. Although it looks delicate, the 10 light-year diameter bubble offers evidence of violent processes at work.
Bubble’s center is a hot, O star, several hundred thousand times more luminous and around 45 times more massive than the Sun. A fierce stellar wind and intense radiation from that star has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud. The intriguing Bubble Nebula and associated cloud complex lie a mere 11,000 light-years away toward the boastful constellation Cassiopeia. This tantalizing view of the cosmic bubble is composed from narrowband image data, recording emission from the region’s ionized hydrogen and oxygen atoms.

2015-01-14T00:00:00

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