Date: 11/10/2010
Target: M33 - Triangulum Galaxy
Telescope: Orion 8"
Camera: Canon 40D (modified)
Filter: IDAS
Exposures: 82x120s (2.7h) @ ISO1600
Framing: North is Right
Location: Mocksville, NC
Seeing: 4/5
Transparency: 4/5
Start Time: 9:00PM
End Time: 1:00AM
Captured with Nebulosity, stacked using DeepSkyStacker, processed in Photoshop.

This is a 3x Dither and crop from the larger M33 image.

From wikipedia:

NGC 604 is a H II region inside the Triangulum Galaxy. It was discovered by William Herschel on September 11, 1784. It is one of the largest H II regions in the Local Group of galaxies; at the galaxy's estimated distance of 2.7 million light-years its longest diameter is roughly 1500 light-years (460 parsecs), over 40 times the size of the visible portion of the Orion Nebula. It is over 6300 times more luminous than the Orion Nebula, and if it were at the same distance it would outshine Venus. Like all emission nebulae, its gas is ionized by a cluster of massive stars at its center.