The Triangulum Galaxy is a spiral galaxy approximately 3 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598, and is sometimes informally referred to as the Pinwheel Galaxy, a nickname it shares with Messier 101. 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.
This galaxy has an inclination of 54° to the line of sight from the Earth, allowing the structure to be examined without significant obstruction by gas and dust.The disk of the Triangulum galaxy appears warped out to a radius of about 8 kpc. There may be a halo surrounding the galaxy, but there is no bulge at the nucleus. This is an isolated galaxy and there are no indications of recent mergers or interactions with other galaxies, and it lacks the dwarf spheroidals or tidal tails associated with the Milky Way.
Imaging telescopes or lenses: Celestron C10-N Newt
Imaging cameras: Moravian G2-8300FW Moravian 8300
Mounts: Gemini g53F Gemini
Guiding telescopes or lenses: Celestron C10-N Newt
Guiding cameras: MagZero QHY5L-IIm
Software: PixInsight PinInsight 1.8, Maxim DL 5 MaximDL 5
Filters: Astronomik LRGB 31 mm
Dates: Sept. 5, 2013
Astronomik LRGB 31 mm: 15×600″ -15C bin 1×1
Astronomik LRGB 31 mm: 14×900″ -15C bin 1×1
Integration: 6.0 hours
Author: Marco Bocchini
AstroPhotography of the day by SPONLI 18 Sep 2014