Back ] Up ] Next ]

Penryn, California
November 2007
M 250 @ f9.3 (ag, ST-4)
ST-10XME LRGB 15 minute subs

Sh 2-228 contains the massive infrared star cluster [IBP2002] CC01. (This is misidentified in SIMBAD as a possible globular cluster.) The 1800 solar mass cluster is 1 to 2 million years old, and the surrounding field stars about 5-6 million years old.  (