300-Foot Transit Radio Telescope, The National Radio Astronomy Observatory

300-FOOT TRANSIT RADIO TELESCOPE THE NATIONAL RADIO ASTRONOMY OBSERVATORY GREEN BANK, WEST VIRGINIA View of the 300-foot transit radio telescope world's largest movable radio telescope. The inside surface area of the dish is 1.8 acres and its maxi- mum height above the ground is 225 feet. Its move- ment has been restricted to elevations along a north-south line. Astronomical programs include measurements of hydrogen gas in our galaxy, in nearby galaxies, and for studies of distant and faint radio sources. Pub. by Valley News Agency, Inc., Staunton, Va. 87445-B dp DEXTER PRESS, INC. WEST NYACK, NEW YORK HERE