M33(N598) Tri Galaxy Difficulty Level: 2/5
NGC 588 Tri Star Cloud? Level: 5/5
NGC 592 Tri Diffuse nebula? Level: 4/5
NGC 595 Tri Diffuse nebula? Level: 4/5
NGC 604 Tri Diffuse nebula? Level: 3/5
Date of observation: 1998/11/14 21:55
Observing site: Makinoto
Transparency: 3/5
Seeing: 4/5
Sky darkness: 4/5
Instruments: 32cm Dobsonian and Pentax XL14
Magnification: 110x
Width of field: 0.6 degree
This is a galaxy with a dynamic spiral arm.
The haze around the core is very faint and requires dark adaptation to see its extent. Once your eye is fully adapted, you will be surprised how extensive the haze is. NGC 604 is bright and located in the northeast of this galaxy. If you spend enough time, you will be able to detect this galaxy's magnificent spiral structures as well as star clusters and nebulae such as NGC 588, NGC 592, and NGC 595 within the galaxy. The core is compact and elongated. At its center lies a small shining nucleus. There are two arms visible, one in the south and the other in the north; both are spiraled counter-clock-wise. The southern arm is divided into three regions. The northern arm is thin and broken off at places while embedded in haze. Other regions of the galaxy appear as faint haze.

NGC 604: Almost circular and small, but as bright as the center of M33.
NGC 595: A small faint object located near where the northern arm starts. The center of this object appears stellar surrounded by fuzzy nebulosity.
NGC 592: This object looks like a faint small spot.
NGC 588: It is located far from the center of M33 and easily missed. It is a much smaller spot than NGC 592.

M33(N598) Tri Galaxy Difficulty level: 2/5
Date of observation: 1995/11/18 00:15
Observing site: Hoshinomura
Transparency: 2/5
Seeing: 2/5
Sky darkness: 3/5
Instruments: 30X125 Binoculars
Magnification: 30x
Width of Field: 1.6 degrees
This is a large elongated object with a small elongated core at the center. The axis of elongation of the core is rotated 90 degrees from that of the galaxy. With this aperture and magnification spiral arms are not visible, but the southern part is slightly brighter than the northern part. MGC 604 is visible but small.