Best of AOP - Planetary Nebulae

NGC 7009: The Saturn Nebula

Though taken under variable seeing conditions, this image still records the intricate detail of this nebula. Most intriguing are of course the ansae that extend along the longer axis of the nebula. In case you are wondering, the word "ansae" is from Latin- literally it means "handles." To date, the process by which these ansae and reddish "FLIERS" develop is still unknown. This structure is observed in many well-known planetary nebula.

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Last Updated: 23-Jun-2014

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About This Image

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Equipment

20in RC Optical Systems telescope Operating at f/8.1

Paramount ME Robotic Telescope Mount

SBIG ST10XME CCD camera with color filter wheel

LRGB color production was used to create this image.

Eight iterations of L-R deconvolution (sharpening) algorithm using CCDsharp were applied to the luminance image.

Luminance = (R+G+B+L) 25 minutes binned 1x1

Red = 5 minutes binned 1x1

Green = 5 minutes binned 1x1

Blue = 5 minutes binned 1x1

Minimum credit line: Brad Ehrhorn/Adam Block/NOAO/AURA/NSF