M33, Triangulum Galaxy

The Triangulum Galaxy is a spiral galaxy approximately 3 million light-years from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, which includes the Milky Way, the Andromeda Galaxy and about 44 other smaller galaxies. It is one of the most distant permanent objects that can be viewed with the naked eye.... more

Image details:
Telescope: TS 90/600 triplet with 2.5" TS flattener
Mount: Skywatcher AZ-EQ5-GT
Camera: Atik one 6.0
Exposure: 84 * 300sec L, 11 * 300sec RGB, 43 * 300sec Ha
Software: PixInsight, PHD

The added value of an Ha filter is clearly visible is the above animated gif.

(c) All photos by Ruud de Vries