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Lowell's 13-in (33-cm) telescope
- Working full time as a professional observer (although lacking any formal education in astronomy), Tombaugh used Lowell's 13-in (33-cm) telescope to systematically photograph the sky. He then used a special instrument, called a blink comparator, to examine the plates for telltale signs of moving bodies beyond the orbit of Earth.
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Professor Tombaugh (the one the station was named for) was working on a giant electronic telescope to photograph it, under a Guggenheim grant, but he had a special interest; he discovered Pluto years before I was born.
The first telescope he ever owned was bought from Sears. By 1925, Clyde was dissatisfied with his store bought telescope and decided to build one for himself. Clyde's father took a second job to pay for the materials needed to build it.
Feb 15, 2013 · Using this telescope, young Clyde made detailed observations of Jupiter and Mars, which he sent to Lowell Observatory in hopes of garnering feedback from professional astronomers.
By the spring of 1929 Clyde Tombaugh had his system well in hand. Using the 13 inch telescope he systematically surveyed the plane of the planets, at every point observing the regions in opposition to the Sun. Over time he accumulated an impressive set of photographic plates, two each for each region of the sky.
Feb 16, 2021 · In 1920, Clyde’s father and uncle purchased a 2¼ -inch telescope from Sears-Roebuck, which Clyde would use to view the cosmos as often as he could. Two years later, the Tombaugh family relocated to Burdette, Kansas, in search of better farming conditions.
Jan 17, 1997 · Clyde Tombaugh, a 24-year-old student and the discoverer of the planet Pluto, looks over a Newtonian reflecting telescope he built in 1928. The mount for this telescope was built from part of the crankshaft from a 1910 Buick and discarded parts from a cream separator.
Clyde Tombaugh: the astronomer who discovered Pluto | BBC Sky at Night Magazine.
