In attachment you can find sketch of famous Triangulum Galaxy (M33)
Object Name: M33 – galaxy in Triangulum
Object Type: spiral galaxy
Location: Jodłów – small village in southern Poland (picture made during StarParty Jodłów 2011)
Media: graphite pencil, white paper, color invert
Telescope: Columbus 320UL (320/1384 Newtonian) + Explore Scientific 30mm
Seeing: 3/5 (average)
Transparency: 2/5 (good)
NELM: 6,4 mag
I think that no additional explanations are needed because all of us know this object. Beside M31 it is most popular galaxy in northern sky.
It is really easy to catch, even in small binocular but if you want to see more than small mist you need 10” or bigger mirror and really dark sky (min 6mag). Then you can observe spiral arms and inner star clouds.