Best of AOP - Diffuse Nebulae

NGC 6992: Veil Nebula Wide-field

These filaments of gas are a portion of a much larger bubble of expanding material generated by the explosion of a massive star. At an estimated distance of 2600 light years, this nebula’s large angular extent on the sky indicates that it is an old remnant. By measuring both the size of the bubble and the velocity of the expanding gas, astronomers estimate that this spectacular explosion took place more than 15,000 years ago. A much younger example is the Crab Nebula.

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Last Updated: 13-Jun-2014

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About This Image

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106mm Takahashi FSQ (530mm f/5) 

Paramount ME Robotic Telescope Mount

SBIG ST10XME CCD camera with color filter wheel

LRGB color production was used to create this image.

Luminance = RGB (synthetic) binned 1x1

Red = 20 minutes binned 1x1

Green = 20 minutes binned 1x1

Blue = 20 minutes binned 1x1

Minimum credit line: Terry Keller/Adam Block/NOAO/AURA/NSF