M 33-Triangulum Galaxy

IMAGE DETAILS

Object ............................................ M33 - Triangulum Galaxy (NGC 598)
Constellation ............................... Triangulum
Distance + Ap. Magnitude......... 3 million Light years (900 Kpc) - 5.72
RA / DEC ..................................... 01h:33m.50sec / +30 39m.36sec
Date + Time ...............................   02-06/11/15 &  - 17:30 UTC
Location ....................................  "Nunki Observatory" - Skiathos
Optics .........................................  
Officina Stellare Advanced RILA 400
f/5.25
Tools ..........................................   The Sky X , CCDAutopilot 5
Camera .....................................   SBIG STXL11002  with FW8G-STXL (Astrodon filters)
Exposure Time.......................     Luminance: 36 X 600sec RGB: 6 X 600sec
More Details ...........................    Environment Temperature : 15oC Camera Temperature -35οC
Mount .......................................   Paramount ME
Guiding ....................................   Self guided
Processing Details ................    Photoshop , Maxim , CCDStack 2, Pixinsight.
Notes ........................................   Weather: Clear - Transparence: Good to Medium - Humidity : 65-85 %
Target details .........................
  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.
The galaxy is the smallest spiral galaxy in the Local Group and it is believed to be a satellite of the Andromeda Galaxy due to their interactions, velocities and proximity to one another in the night sky.
Under exceptionally good viewing conditions with no light pollution, the Triangulum Galaxy can be seen with the naked eye. It is one of the most distant permanent objects that can be viewed without the aid of a telescope. Being a diffuse object, its visibility is strongly affected by small amounts of light pollution. It ranges from easily visible by direct vision in dark skies to a difficult averted vision object in rural or suburban skies. For this reason, Triangulum is one of the critical sky marks of the Bortle Dark-Sky Scale.

Nikos Paschalis