M33, The Triangulum Galaxy is quite small compared to its big apparent neighbor M31.

M33 is located in the constellation Triangulum, and at 3 million light years it is the most distant object which can be seen without any optical aids (from a very dark location).
The Triangulum Galaxy is the 3rd largest member of the Local Group of galaxies.
This group includes our own Milky Way Galaxy, M31 (Andromeda Galaxy) and approximately 30 other smaller galaxies.

Other versions

Previous/older images:

Sep 15, 2007 – Canon 350D (8″ GSO f4 Newt. 1h09m)

Image data

Name M33 – The Triangulum Galaxy
Type Spiral galaxy
Constellation Triangulum
Right ascension 01h 33m 50s
Declination +30° 39′ 37″
Distance 3 Mly
Other designations NGC598, PGC005818