Salt and Pepper Cluster (Young M35 + old NGC2158)
There are two open clusters in this photo. M35, in blue, is relatively near, an open cluster in the constellation Gemini. It was discovered by Philippe Loys de Chéseaux in 1745. M35 is scattered over an area of the sky almost the size of the full moon and is 2,800 light-years from Earth. The mass of M35 within the central 12 light years was found to be between 1600 and 3200 solar masses.
NGC 2158, the smaller cluster below centre left in red, is an old open cluster, believed to be just over 1 billion years old. It is 6 times further away than M35, at about 17,000 light years
WO 132FLT with TMB field flattener: SBIG 11000 CM: Titan Mount
Approx 15 x 4 minutes
Data capture 21st March 2011