Best of AOP - Galaxies

NGC 4151

This spiral Seyfert galaxy is located about 43 million lightyears away in the constellation Canes Venatici. Nicknamed the "Eye of Sauron" by astronomers, this galaxy contains an actively growing supermassive black hole. Because it is relatively close to Earth, NGC 4151 is intensively studied by astronomers to learn more about how the surrounding gas interacts with the black hole. The surrounding gas radiates brightly in the X-ray portion of the electromagnetic spectrum, making X-ray telescopes a powerful tool for observing these types of galaxies. The Chandra X-ray Observatory obtained an X-ray image of this galaxy in 2011.

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Last Updated: 28-Mar-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.

3 minute subexposures were used for the luminance data due to the galaxy's bright central core.

Digital Development (DDP) via Maxim/DL was also used in order to display the very dim and very bright details of

the image simultaneously.

Luminance = 42 minutes binned 1x1

Red = 20 minutes binned 2x2

Green = 20 minutes binned 2x2

Blue = 20 minutes binned 2x2

Minimum credit line: Debi and Ashley Roeckelein/Flynn Haase/NOAO/AURA/NSF