Starburst Galaxy, M94
Copyright 2011
Larry Phillips
sonorandarkskies022001.jpg
M94, The Starburst Galaxy, in the constellation Canes Venatici

Spiral Galaxy Cataloged as NGC 4736

This galaxy is part of the Local Group of galaxies which includes M31 and our own Milky Way Galaxies. This bright circular disk is surrounded by a ring of active star-forming regions (hence its name) which sharply separates it from a much less bright outer ring of an older yellowish stellar population.

Distance: The distance of M94 has not been well determined with estimates ranging
                 from about 14 million to 33 million light years.
Camera: SBIG ST-2000XM
Telescope: Astrophysics Starfire 130 EDT F8
Mount: Losmandy G11 with Gemini Control with Advanced Telescope Systems
                 portable pier
Images: 10 luminance @ 5 minutes each, 9 Red @ 5 minutes each, 10 Green
                @ 5 minutes each, 10 Blue @ 5 minutes each for a total exposure time of
                 195 minutes. However, due to periodic thin cloud cover this exposure level is not shown in
                 the image due to a lower signal to noise ratio on many of the images, especially with the
                 blue filter.
Date: May 2007
Software: Camera and guider control - CCDSoft, calibration, stacking, & creation of
                 color image - CCDStack, further processing in Photoshop CS2.