Messier 35

The open cluster M35 in the constellation Gemini contains a couple of hundred stars and is visible to the naked eye under good conditions. NGC2158, its fainter but compact neighbor to the south-west (lower right), is much harder to see in small telescopes. M35 is about 2800 light-years away and some 110 million years old.

In a 8-inch scope at 49x, the cluster takes up the entire field of view. The most noticeable feature is an arc of stars on one side, dipping toward the center. At either end of the arc are brighter stars. Also, in the center of the cluster is a dark area which is mostly devoid of stars. All told, there are probably in the neighborhood of 50-60 stars visible in the cluster.


    M35
    NGC 2168
    Other description: Open cluster rich.
    Constellation: Gemini
    Dreyer description: Cluster, very large, considerably rich in stars, westward compressed, stars of magnitude 9 to 16; = M35.
    Magnitude: 5.1
    RA: 06h 09m 08.0s Dec: +24°20'04"
    RA: 06h 08m 54.0s Dec: +24°20'00" (Epoch 2000)
    Azm: 201°28'48" Alt: +66°52'08"
    Rise: 04:58 Transit: 12:54 Set: 20:50
    Size:28.0'

RASC Charlottetown Centre