Keck 10-Meter Telescopes


The twin Keck telescopes on Mauna Kea, a dormant volcano on the large island of Hawaii, have mirrors 10 meters in diameters, and are at present the largest telescopes in the world.  These telescopes were used by the two teams to both confirm their observations to determine for certain if they were type 1A supernovae and to measure their Doppler shift to measure the rate of expansion in the early universe.  
The twin 10-meter Keck telescope domes on Mauna Kea, Hawaii. Image courtesy o fthe W.M. Keck Observatory.Cosmologist Jeff Cooke of the University of California, Irvine recently announced the discovery of the most-distant supernova ever observed using the Keck telescopes.  The object is 11 billion light years distant, which means it exploded when the universe was just 2.7 billion years old.