An engraving of Huygens's 210-foot aerial telescope showing the eyepiece and objective mounts and connecting string.
An aerial telescope is a type of very long focal length refracting telescope, built in the second half of the 17th century, that did not use a tube.[1] Instead, the objective was mounted on a pole, tree, tower, building or other structure on a swivel ball-joint. The observer stood on the ground and held the eyepiece, which was connected to the objective by a string or connecting rod. By holding the string tight and maneuvering the eyepiece, the observer could aim the telescope at objects in the sky. The idea for this type of telescope may have originated in the late 17th century with the Dutch mathematician, astronomer and physicist Christiaan Huygens and his brother Constantijn Huygens, Jr.,[2][3] though it is not clear if they actually invented it.[4]
^"The Telescope". The Galileo Project. Retrieved 5 March 2012. After about 1675, therefore, astronomers did away with the telescope tube. The objective was mounted on a building or pole by means of a ball-joint and aimed by means of a string...
^King, Henry C. (2003), The history of the telescope, ISBN 978-0-486-43265-6
^"The First Telescopes", Cosmic Journey: A History of Scientific Cosmology, Center for History of Physics, a Division of the American Institute of Physics, archived from the original on 2008-04-09, retrieved 2009-05-06
^Bell, A. E. (1948), "Christian Huygens and the Development of Science in the Seventeenth Century", Nature, 162 (4117): 472–473, Bibcode:1948Natur.162..472A, doi:10.1038/162472a0
An aerialtelescope is a type of very long focal length refracting telescope, built in the second half of the 17th century, that did not use a tube. Instead...
cost and portable, Aerialtelescopes overcame the optical shortcomings of 17th-century objective lenses, etc. Optical telescopes can be classified by...
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observations with large aerialtelescopes and he is noted for briefly considering the construction of a huge aerialtelescope 1,000 feet in length that...
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stick. The boom operator also telescopes the boom to make the connection with the receiver's receptacle. To complete an aerial refueling, the tanker and receiver...
been the longest "tubed" telescope before the advent of the tubeless aerialtelescope. The observatory was known by the name Sternenburg (Latin: Stellaeburgum;...
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the Sun, Moon, and planets and designing contrivances for aiming aerialtelescopes. From 1679–1682 he made several observations and measurements of the...
Weird Objects in the Sky – The Galileo Project seeks to train telescopes on unidentified aerial phenomena". Scientific American. Retrieved September 19, 2021...
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paper proposing their use in precision measurement, a clock-driven aerialtelescope objective lens constructed in 1685 by Italian-French astronomer Giovanni...
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