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The Bubble Nebula |
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About This Photograph
The enigmatic Bubble Nebula is true to its name. Were it not for a peculiar type of very hot star situated within it, this would other wise be a fairly run-of-the-mill emission nebula. But the star, known as a Wolf-Rayet star, issues forth an unusually powerful stellar wind. This stream of particles slams into the gas and dust of the nebula, literally blowing a vast bubble in space. The physical size is mind-boggling: the nebula is roughly 7,100 light years away, and the bubble itself is about 6.2 light years across, a bit over 36 trillion miles.
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Technical Details |
| Optics: | 14" f/10 RCOS Ritchey-Chrétien Cassegrain at f/7,Takahashi FRC-300 focal reducer. | | Camera: | SBIG ST-10XME, CFW-8, AO-7. | | Mount: | RGB: Takahashi NJP Temma 2.Ha: AP1200GTO. | | Filters: | SBIG standard RGB, Custom Scientific 3nm H-alpha. | | Dates/Times: | 28, 29 September, 29 October 2003. | | Location: | my backyard observatory in Austin, Texas. | | Exposure Details: | RGB = 205:30:30 minutes (5-minute sub-exposures).Ha = 2.5 hours (30-minute sub-exposures). | |
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