The Triangulum Galaxy (Messier 33 or NGC 598) is a spiral galaxy approximately 3 million light-years from Earth in the constellation Triangulum. M33 is sometimes referred to as the Pinwheel Galaxy, although that name is officially applied to M101. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, after our own Milky Way and the Andromeda Galaxy.

This image is a stack of 21 ten-minute exposures on my Canon 450D at 1600 ISO, taken through my SkyWatcher ED-100. The images were stacked in DSS and processed in Photoshop.

Image Center:	View full size annotated image.
Right Ascension:	1h 33m 52.741s (23° 28m 11.117s)
Declination:	+30° 38m 58.491s
Orientation:	Up is 85.6 degrees West of North.
Image Size:	1.416° x 56.557'	Pixel Scale:	1.188"

Principal objects in field: M 33, NGC 598, Triangulum galaxy

All identified catalog objects: HD 9269, HD 9444, HD 9483, HD 9686, HD 9687, IC 131, IC 132, IC 133, IC 134, IC 135, IC 136, IC 137, IC 139, IC 140, IC 142, IC 143, NGC 588, NGC 592, NGC 595, NGC 598, NGC 603, NGC 604