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The Pinwheel Galaxy

The Pinwheel galaxy, also known as M33, is one of the closest large galaxies to our own, and also one of the brightest. Although it has a low surface brightness, it can be seen with the unaided eye from a very dark rural site. The brightest HII region has its own NGC designation, NGC 604, and can also be easily seen in an amateur telescope at moderate power.

 

Takahashi Sky 90 at f/4.5

SBIG STL-4020M (self-guided)

Takahashi EM-200

Hutech LPS Filter

H-alpha: 1:20 (20 minute subexposures, from 9-Sept-2007)

Luminance: 60 (5 minute subexposures, from 30-Sept 2006)

RGB: 30 minutes each channel (5 minute subexposures, from 30-Sept-2006)

Processed in Maxim/DL and Photoshop

Noel Carboni's Astronomy Tools Actions

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Taken on November 1, 2007