Gemini Observatory tracks distant star cluster with adaptive optics

Gemini Observatory tracks distant star cluster with adaptive optics 05/15/2017 12:19 PM EDT Researchers combine images from NSF's Gemini South's wide-field adaptive optics system with data from the Hubble Space Telescope to determine the proper motion of a distant cluster of stars. The observations, the first to use ground-based adaptive optics to precisely measure the motion of a cluster at such a large distance, allowed astronomers to set a lower limit for the mass of our Milky Way while providing clues about the cluster's origin. Full story at http://www.gemini.edu/node/12662 Source Gemini Observatory This is an NSF News From the Field item.   Follow NSF:  This email was sent using GovDelivery, on behalf of: National Science Foundation Update · 4201 Wilson Boulevard · Arlington, VA 22230 · 703-292-5111