OBSERVATORIES & TELESCOPES A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site William Herschel Telescope A 4.2-meter reflector at the Roque de los Muchachos Observatory in the Canary Islands. Opened in 1987, it is jointly owned by Britain and the Netherlands. Related category    • OBSERVATORIES AND TELESCOPES Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP