Messier 35 & NGC 2158, Young & old

2009-11-29, RGB


50 %

100 % crop

IAU and Sky & Telescope magazine

Image data

Photographer:Jürgen Stöger
Optics:Takahashi FSQ106ED f/5 (main)
Scopos ED66 (guide)
Mount:Fornax 51
Cameras:QHY8 Pro (main)
Starlight SXV-M7 (guide)
Exposure:80 minutes
Conditions:bright night with high cirrus clouds
Moon:87 % illuminated fraction
Date:29 November 2009

M 35 object information

Messier 35 and NGC 2158 are open star clusters in the constellation Gemini. M 35 was discovered by the Swiss astronomer Jean-Phillippe Loys de Chéseaux in 1745 in his private observatory in Lausanne. The cluster was separately discovered by the English amateur astronomer John Bevis who might be the original discoverer of M 35.

Size: 30′
Brightness: 5.1 mag
Distance: 2.200 light years
Trümpler classification: III 2 m

NGC 2158 object information

Size: 5′
Brightness: 8.6 mag
Distance: 13.000 light years
Trümpler classification: II 3 r