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Open cluster in Corona Borealis!

Started by ronbee, 06/05/2002 05:39PM
Posted 06/05/2002 05:39PM Opening Post
What? Open cluster in Coronae Borealis? No can be, you say!

When I first looked at Corona Borealis, there wasn't a single DSO reachable through a small telescope! What makes it so sad is that the star formation of this constellation is so pretty and conspicuous. So beautiful but yet so barren! (Of course, with a very large light bucket, many dimmy galaxies are abound.)

So while panning around with my 40mm Pentax XL at 3 degree FOV, the Light Cup stumbled upon an undiscovered(?) open
"cluster". Try it. Star hop from Delta Coronae Borealis to Epsilon Coronae Borealis. Draw a line between Upsilon Coronae Borealis and Delta Coronae Borealis and continue southeast of this line to the mag 6.6 star SAO 84223. Finally, center your eyepiece at the mag 6.5 star SAO 84247. You're now at the center of the "LC-1" i.e., "Light Cup 1") open cluster. I counted about 25 uniformly white stars and many more dim stars. You'll need at 3 degree FOV to appreciate it.

So where can the Light Cup apply for a new catalog for LC-1 ;-)? Ok, so if these group of stars can't be considered an open cluster, well why not 'cause they sure look like they form a "cluster"?

Ron B[ee]
PS I've seen worse open clusters in the NGC Catalog!
Posted 06/06/2002 02:50PM #1
Interesting Ron. I'll have to take a look. I pulled it up in "The Sky". I doesn't look like much, but it must have been bright to catch you attention. I noticed another grouping at the 1 to 2 oclock position that looks interesting as well. Use sao84221 as a starting point, the group of stars will be to the left.
Don

Don Spencer
http://members.cox.net/ecdon/astrophotography.html