Best of AOP - Galaxies

M101

M101 is an extremely large "Grand Design" spiral galaxy. Even at a distance of 27 million light years away, it still sprawls its 170,000 light year diameter across a large patch of sky. This image only shows the central third of its countenance. Many of the bright star forming regions in the spiral arms have their own NGC designations. Also note the myriad of background galaxies that can be seen in various places through the disk.

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Last Updated: 24-Feb-2014

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About This Image

Click on image for larger version.

Equipment

16in RC Optical Systems telescope Operating at f/8.4

Paramount ME Robotic Telescope Mount

SBIG ST10XME CCD camera with color filter wheel

LRGB color production was used to create this image.

A small part of this data was acquired with Bonnie Fisher and Mike Shade.

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 = 180 minutes binned 1x1

Red = 30 minutes binned 2x2

Green = 30 minutes binned 2x2

Blue = 30 minutes binned 2x2

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