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Barclay was one of several observers looking for a companion to Procyon. The telescope is moved from one position to another by means of electric motors and is so finely balanced that it can be moved by hand. His reasoning wasn't as readily accepted as he had hoped. On the appointed day—March 15, —a large audience gathered to hear Curtis in the new lecture room at Washington's prestigious Cosmos Club then located at Lafayette Square , the traditional meeting place for the city's intelligentsia. Are you familiar with all of them? The camera does not provide any type of auto exposure adjustment.
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In Kuiper discovered the fifth satellite of Uranus and in the second satellite of Neptune. The first successful lunar ranging tests were carried out in when a team from the Massachusetts Institute of Technology succeeded in observing laser pulses reflected from the Moon's surface using a laser with a millisecond pulse length. The two inch mirrors Common ordered for the telescope were included in the sale. Namespaces Article Talk. Osterbrock, Donald E. Within months of its discovery, Leuschner cast the first doubt on Pluto's status as a planet, suggesting instead that it was unclear whether Pluto was a large asteroid , a planet , or a comet.
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Leuschner Observatory - Wikipedia

These are so constructed that they can be moved by hand, although they are usually operated by an electric motor. University of California. Kirby-Smith, H. Variable stars received attention, especially after photoelectric photometry became popular.
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Leuschner Observatory

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Description: They are currently the 3rd and 4th largest. Armin Otto Leuschner. Counterweights were carried in boxes below the mirror and below the declination axle. The housing and platform could be rotated as a unit to the desired azimuth.

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