Object name: NGC2266
NGC 2266 is another Herschel 400 open cluster. William Herschel discovered it on December 7, 1785 with his trusty 20' reflector with an 18.7" mirror. It is located in Gemini 1.8 degrees north of Mebsuta (Epsilon Geminorum). It is about 5 minutes of arc across and 11,000 light-years distant. WEBDA puts its age at 630 million years though APOD and other sources say 1 billion years. Either way, it is a rather unusually old open cluster. It spends most of its time well above or below the galaxy's plane so escapes a lot of the tidal forces that rip apart much younger clusters. The red stars in it give away its age as does the lack of really blue stars. Being well above the plane of the galaxy it is only reddened about 0.1 magnitude.