Daily Archives: October 19, 2014

Triangulum Galaxy


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 withMessier 101. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, which includes the Milky Way, theAndromeda 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 Triangulum Galaxy is sometimes informally referred to as the “Pinwheel Galaxy” by some amateur astronomy references and in some public outreach websites. However, the SIMBAD Astronomical Database, a professional astronomy database that contains formal designations for astronomical objects, indicates that the name Pinwheel Galaxy is used to refer to Messier 101, and several other amateur astronomy resources and other public outreach websites also identify Messier 101 by that name.

Imaging telescopes or lenses: Takahashi Epsilon 180ED
Imaging cameras: SBIG STT 8300M
Mounts: Orion Atlas EQ-G
Guiding telescopes or lenses: Takahashi Epsilon 180ED
Guiding cameras: SBIG STT 8300M
Software: PixInsight, Maxim DL
Filters: Baader L 1.25” Filter, Baader B 1.25” Filter, Baader G 1.25” Filter, Baader R 1.25” Filter, Baader H-alpha 7nm
Resolution: 3299×2494
Dates: Oct. 14, 2014
Locations: Home Observatory
Baader B 1.25” Filter: 8×130″ bin 1×1
Baader G 1.25” Filter: 8×100″ bin 1×1
Astrodon H-alpha 5nm: 8×100″ bin 1×1
Baader L 1.25” Filter: 20×100″ bin 1×1
Baader R 1.25” Filter: 8×100″ bin 1×1
Integration: 1.5 hours
Avg. Moon age: 20.49 days
Avg. Moon phase: 67.31%
RA center: 23.472 degrees
DEC center: 30.663 degrees
Orientation: -90.905 degrees
Field radius: 1.272 degrees

Аuthor: jerryyyyy, 19.10.2014