Messier 105

105 final

Object:   M105  (NGC 3379) Date:               2018 May 2
Type:  Elliptical galaxy
Constellation:           Leo Time & altitude:        22.20 UT      42º
Catalogue data: Seeing (5 high):                               4/5
            R.A:                10h 48m Transparency (5 high):                   3/5
            Dec:                12º 35 Telescope:     0.5m f4.1  Dob.
            Magnitude     9.3 Eyepiece       8mm Ethos                x260
            Size (mins)    5 x 4 Filters:            None


A lot of moisture in the air and aircraft vapour trails are causing intermittent fading out. M105 is a bright, round galaxy with a bright non-stellar core. There is no detail visible in the halo. Following M105 in the same field are NGC 3384 (10.9m) and NGC 3389 (12.4m).

NGC 3384 is a half-sized version of M105 and similarly bright and easy. In contrast NGC 3389 is easily missed due to its low surface brightness. It is oval with the major axis pointing at M105. There is no core and the overall size is difficult to judge.