Open Cluster in Puppis
Messier 93 is a distintive group of about 80 stars. The densely packed center of the cluster has a wedge shape. My notes on the visual appearance of this cluster describe five curving arms that extend from the center.
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Image details: Exposure times of 12 minutes luminance and 9 minutes each of red, green and blue, taken with an SBIG ST-8300M imager and a 12" Meade telescope at f/5.6.
March 2012