M 105  +  NGC 3384  +  NGC 3389

Full resolution (1600x1200 px  380kB)

150% resolution (600kB)

Object identification (380kB)

Object data of M105

Object type: galaxy (E1)
Size: 5.3' x 4.8'
Magnitude: 10.5 mag
Constellation: Leo
Distance: 56 Mio Ly

M105 is a member of the Leo I group of galaxies. It is a typical representive of elliptical galaxies. Because of it's uniformity of color over the entire range of luminosity, M105 is used as a photometric standard for the surface brightness distribution of elliptical galaxies.

The other two bright galaxies in the above image are NGC3384 and NGC3389.

Many background galaxies, which can be found in the image are members of the more distant galaxy cluster ZwCl 1045.8+1251.

Exposure data

Date: 2010-04-08 + 17 + 19
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: ST2000XM with CFW8 and Baader Filters
Binning: L 1x1 / RGB 2x2
Exposure time: L 25x12m / R 10x8m / G 10x8m / B 8x8m
Exposure time total: 8h 44m