Best of AOP - Galaxies

NGC 7217

This galaxy has very tight spiral "structure." However, no one feature extends long enough to be a spiral arm. This galaxy sports a curious ring of dust (dark circle) that surrounds the nucleus. It is estimated that this galaxy is around 41 million light years away. Note the very subtle difference in color between the inner yellowish region is outer bluish arms. This galaxy is not unlike NGC 488 and NGC 2841.

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Last Updated: 07-May-2014

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About This Image

Click on image for larger version.

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.

One iteration of L-R deconvolution (sharpening) algorithm using CCDsharp was applied to the luminance image.

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 = 105 minutes binned 1x1

Red = 20 minutes binned 2x2

Green = 20 minutes binned 2x2

Blue = 20 minutes binned 2x2

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