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Laurent Cassegrain, a French priest, invents a reflecting telescope based on Gregory's principles.
Newton invented the reflecting telescope which was even more powerful, and used mirrors to reflect light.
in Colorado Springs -- to study the feasibility of developing a large reflecting telescope that would take a detailed census of our planet's blanket of orbiting debris.
Biosphere 2 Observatory -- The new Biosphere 2 Observatory, completed in October of 1999, features a 24-inch, research-grade, reflecting telescope with the same optical design as the Hubble Space Telescope.
From being mostly amateurs, astronomers were now mostly professionals; professional astronomy became dominated by astrophysics rather than astrometry and orbit calculations; the reflecting telescope superseded the refractor; and photographic observations took precedence over the visual.
The telescope was invented in the 17th century and there are two specific types, the reflecting telescope, which utilises a concave mirror to form the image, and the refracting telescope, which utilises a series of lenses to magnify the image.
Dogged by delays ever since Congress approved its funding in 1977, the device--actually five observing instruments (see sidebar) that feast on light from a single reflecting telescope -- was first set for launch in late 1982.
The Biosphere 2 Observatory will feature a 24-inch research-grade reflecting telescope similar in design to the Hubble Space Telescope.
26) It was also agreed at this meeting to name the instrument after Sir Isaac Newton, inventor of the reflecting telescope.
State-of-the-art facilities include a Virtual Nursing Learning Center, VisBox virtual-learning system, theater, non-linear video editing lab, 16-inch computer-controlled reflecting telescope, DNA sequencing, weather station with Doppler radar and the new Christopher Center for Learning and Information Resources.
The revolutionary power of the Principia and other Newtonian works is felt to this day: His celestial mechanics guide the paths of satellites and spacecraft, his reflecting telescope is enabling astronomers to study recently discovered supernovas, his numerical methods are used in computers and his mathematics and approach to solving many physical problems remain as vital today as in his time.
The observatory will feature a 24-inch reflecting telescope, a public viewing area and classrooms for one of Columbia University's newest educational initiatives -- the Universe Semester.