Shutter Looking out a partially open dome shutter high in the Keck 2 dome during testing of the shutter Share this: Share on WhatsApp (Opens in new window) WhatsApp Share on Reddit (Opens in new window) Reddit Email a link to a friend (Opens in new window) Email Author: Andrew An electrical engineer, amateur astronomer, and diver, living and working on the island of Hawaiʻi. View all posts by Andrew