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Optical telescope
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An optical telescope gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct visual inspection, to make a photograph, or to colle
The Large Binocular Telescope at the Mount Graham International Observatory in Arizona uses two curved mirrors to gather light
The Large Binocular Telescope at the Mount Graham International Observatory in Arizona uses two curved mirrors to gather light
Eight-inch refracting telescope at Chabot Space and Science Center
Eight-inch refracting telescope at Chabot Space and Science Center
The Keck II telescope gathers light by using 36 segmented hexagonal mirrors to create a 10 m (33 ft) aperture primary mirror
The Keck II telescope gathers light by using 36 segmented hexagonal mirrors to create a 10 m (33 ft) aperture primary mirror
Two of the four Unit Telescopes that make up the ESO's VLT, on a remote mountaintop, 2600 metres above sea level in the Chilean Atacama Desert.
Two of the four Unit Telescopes that make up the ESO's VLT, on a remote mountaintop, 2600 metres above sea level in the Chilean Atacama Desert.
Telescope
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A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. Originally, it was an optical instrument using lenses, curved mirrors
Optical telescope
…image for direct visual inspection, to make a photograph, or to collect data through electronic image sensors. There are three primary types of optical telescope : Refracting telescopes, which use lenses and less commonly also prisms (dioptrics…
The 100-inch (2.5 m) Hooker reflecting telescope at Mount Wilson Observatory near Los Angeles, used by Edwin Hubble to measure galaxy redshifts and di
The 100-inch (2.5 m) Hooker reflecting telescope at Mount Wilson Observatory near Los Angeles, used by Edwin Hubble to measure galaxy redshifts and discover the general expansion of the universe.
Replica of possibly the oldest surviving telescope (1609–1640), suspected to be an early "Cannocchiali" refracting telescope by Galileo Galilei.
Replica of possibly the oldest surviving telescope (1609–1640), suspected to be an early "Cannocchiali" refracting telescope by Galileo Galilei.
A replica of a second reflecting telescope Isaac Newton presented to the Royal Society in London in 1672
A replica of a second reflecting telescope Isaac Newton presented to the Royal Society in London in 1672
Three radio telescopes belonging to the Atacama Large Millimeter Array
Three radio telescopes belonging to the Atacama Large Millimeter Array