Cr140/132 Splashy Open Cluster in Canis Major

Uploaded 3/26/11

Select an image size for a larger view: 1290 x 960 1600 x 1200

 Two Superimposed star clusters lie in this unique field of view. In the center, the dozen or so brightest stars are a loose aggregation known as CR132, a loose but very colorful collection of 5th through 7th magnitude stars arranged in a V pattern. This inner cluster is large by any standards, recalling that this field is 2.5 degrees across! The cluster is located just under the basal three triangle of stars in the constellation of Canis Major, and can be easily seen with the naked eye on a moon less night. I first heard of this object from a friend and fellow visual observer Steve Coe, who kept remarking that this startling object should indeed have some sort of as of yet unknown catalog designation. So he named it "Coe 1", and every time I see this object I can think of no other name. (The Coe catalog is two objects - Coe 2 is the large open cluster next to the double cluster in Perseus - Stock 1)

The second cluster here is the entire field itself, a rich patch in the winter Milky Way which was named CR132. It is so huge and faint that I cant say for sure from this image if it is visible as a separate cluster.

Optics: 8" f/4 Newtonian Astrograph w/Baader MPCC Coma Corrector Platform: Homemade GEM w/Byers Starmaster Drive Camera: Hutech Modified Canon XTi @ ISO800 Exposure: 3 x 5m Location: Happy Jack, Arizona Elevation: 6800 ft. Sky: Seeing 8/10, Transparency 8/10 First Quarter Moon Outside Temperature: 35F Processing Tools: Photoshop CS2, Images Plus 3.82 HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS