NGC 185

Full resolution (1600x1200 px  700kB)

Object identification (1600x1200 px  700kB)

Object data of NGC185

Object type: galaxy (dE)
Size: 12.5' x 10.4'
Magnitude: 10.3 mag
Constellation: Cas
Distance: 2.0 Mio Ly
Notes: NGC185 is a dwarf spheroidal galaxy about 2.0 Mio Ly away in the constellation Cassiopeia. It is a member of the Local group of galaxies and a satellite galaxy of the Andromeda Galaxy. NGC185 builds a non interacting pair with NGC147, which is outside the image field of the above image. NGC147 and NGC185 are both dwarf spheroidal galaxies, but there is an obvious difference: Whereas NGC147 is gas and dust free, NGC185 shows a considerable amount of gas and dust clouds, as seen clearly in the center of the above image.  

The 'noise' inside NGC185 visible in the above image is a hint for the beginning resolution of single stars inside this galaxy.

The object identification indicates the positions of the known globular clusters of NGC185 (Ford, Jacoby and Jenner 1977). New observations with the Hubble Space Telescope showed that FJJ-VI is no globular cluster, but an elliptical galaxy. The above image shows that  the colour of FJJ-VI is reddish compared with the colour of the other FJJ globulars. This is a sign for the elliptical galaxy nature of FJJ-VI.

Exposure data

Date: 2009-01-25 + 26
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1139mm)
Camera: ST2000XM with CFW8 and SBIG Filters
Binning: L 1x1 / RGB 2x2
Exposure time: L 16x12m / R 9x12m / G 9x6m / B 9x6m
Exposure time total: 6h 48m
Notes: Bad seeing during RGB exposures, bad transparency during luminance exposures.