Hale telescope. View of the dome of the 5 metre (200-inch) Hale telescope at Mount Palomar,California,USA. When this reflecting mirror telescope was completed in 1948,it was the world's largest optical telescope and remained so until the completion of the 6 metre Russian BTA-6 telescope in 1975. The Hale telescope is named after the astronomer George Ellery Hale. Many important astronomical discoveries have been made with this telescope,including the first observation of a brown dwarf star and the first optical spectrum obtained from a quasar. In 2007 it continues to be used for astronomical research | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Bartel, Alex |
Taille de l’image : | 4875 px × 4894 px |
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