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Show New Lens on Telescope Seeks Hot Bright Stars PASADENA, CALIF. Recent development de-velopment of photographic plates sensitive to red light has led the Mount Wilson observatory to remodel re-model its 10-inch telescope for a search for distant, hot bright stars. A prism is attached to the telescope tele-scope for studying the stars by their spectrums. The lens used with it originally was designed to focus on the blue light from stars. Dr. Frank E. Ross, optical consultant con-sultant on the 200-inch telescope for Mt Palomar, has designed a lens for the 10-inch instrument which will focus on the red and yellow end of .the spectrum. E. C. Williams of the Mount Wilson Wil-son instrument shop, developed a variable-speed driving device by which astronomers can press a button but-ton and obtain any desired movement move-ment of the telescope. Most telescopes tele-scopes are kept focused on a star by a clock drive. The new device eliminates the necessity ne-cessity of adjusting for temperature tempera-ture changes and makes it possible, according to Dr. Paul W. Merrill, to spread out the light of a star for I spectrograph studies. |