An optical telescope is a telescope that gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified...

Originally, it was an optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects – an optical telescope. Nowadays, the...

Telescopes with aperture diameter >8 metres This list of the largest optical reflecting telescopes with objective diameters of 3.0 metres (120 in) or greater...

largest optical reflecting telescopes – List of large optical telescopes List of largest optical refracting telescopes List of space telescopes List of...

Extremely Large Telescope (ELT) is an astronomical observatory under construction. When completed, it will be the world's largest optical and near-infrared...

A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a...

of about 0.05 arcsec for an optical telescope with a mirror 2.5 m (8 ft 2 in) in diameter. Second, a space-based telescope could observe infrared and ultraviolet...

Nordic Optical Telescope (NOT) is an astronomical telescope located at Roque de los Muchachos Observatory, La Palma in the Canary Islands. The telescope saw...

from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large...

The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of...

The National Optical Astronomy Observatory (NOAO) was the United States national observatory for ground-based nighttime ultraviolet-optical-infrared (OUVIR)...

observations using his telescope List of optical telescopes List of largest optical refracting telescopes List of space telescopes List of telescope types Visible-light...

optical telescopes are used to make observations in the visible portion of the spectrum in traditional optical astronomy. Unlike optical telescopes,...

An extremely large telescope (ELT) is an astronomical observatory featuring an optical telescope with an aperture for its primary mirror from 20 metres...

amateur, and commercial sub-types. Telescopes can be classified by optical design or mechanical design/construction. Telescopes can also be classified by where...

The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. As the largest telescope in space, it is equipped with...

The Large Ultraviolet Optical Infrared Surveyor, commonly known as LUVOIR (/luːˈvwɑːr/), is a multi-wavelength space telescope concept being developed...

highest located sites for optical, infrared and gamma-ray telescopes. It is currently[when?] the tenth-highest optical telescope in the world. The Indian...

Vatican Advanced Technology Telescope (VATT), is a Gregorian telescope observing in the optical and infrared situated on Mount Graham in southeast Arizona...

(since 2008) is a 2.4-meter fast-tracking optical telescope, and under construction is a ten-element optical interferometer. The MRO Interferometer is...

of four individual telescopes, each equipped with a primary mirror that measures 8.2 meters in diameter. These optical telescopes, named Antu, Kueyen...

off-axis optical errors (coma). The RCT has a wider field of view free of optical errors compared to a more traditional reflecting telescope configuration...

The Orgov Radio-Optical Telescope, also known as ROT54 or the Herouni Mirror Radio Telescope, is a radio telescope in Orgov, Armenia. It was built between...

of telescopes List of largest optical reflecting telescopes List of largest optical telescopes in the 20th century List of largest optical telescopes in...

Extremely Large Telescope Giant Magellan Telescope List of optical telescopes List of largest optical reflecting telescopes Thirty Meter Telescope Gilmozzi,...

COAST, the Cambridge Optical Aperture Synthesis Telescope, is a multi-element optical astronomical interferometer with baselines of up to 100 metres, which...

headlamps, early lighthouse focusing systems, optical telescopes, microscopes, and telephoto lenses. Other optical systems that use lenses and mirrors are also...

3.67 m Advanced Electro Optical System Telescope is a Department of Defense telescope at Haleakala Observatory. The telescope is part of the Maui Space...

is one of the largest optical telescopes in the world. It combines a number of features that differentiate it from most telescope designs, resulting in...

productive 4-metre-class optical telescope in the world based on scientific publications using data from the telescope. The telescope was commissioned in 1974...