Telescope that 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 collect data through electronic image sensors.- Optical telescope
254 related topics
Series of eight paintings by 18th-century English artist William Hogarth.
Tom begins to go mad, as indicated by both a telescope for celestial observation poking out of the barred window (an apparent reference to the longitude rewards offered by the British government) and an alchemy experiment in the background.
The phases of Venus are the variations of lighting seen on the planet's surface, similar to lunar phases.
The phases of Venus result from the planet's orbit around the Sun inside the Earth's orbit giving the telescopic observer a sequence of progressive lighting similar in appearance to the Moon's phases.
Siding Spring Observatory near Coonabarabran, New South Wales, Australia, part of the Research School of Astronomy & Astrophysics (RSAA) at the Australian National University (ANU), incorporates the Anglo-Australian Telescope along with a collection of other telescopes owned by the Australian National University, the University of New South Wales, and other institutions.
Between 1953 and 1974, the 74 in reflecting telescope at Mount Stromlo was the largest optical telescope in Australia.
Iron sights are a system of physical alignment markers (usually made of metallic material) used as a sighting device to assist the accurate aiming of ranged weapons (such as a firearm, airgun, crossbow or even compound bow), or less commonly as a primitive finder sight for optical telescopes.
Optical sighting device based on a refracting telescope.
Being optical telescopes, prism scopes can focally compensate for a user's astigmatism, including when used as a non-magnified (1×) model.
Objective lens which is not corrected for chromatic aberration.
In telescopes they can a be pre-18th century simple single element objective lenses which were used before the invention of doublet achromatic lenses.
Impact on the surface of the Moon on September 14, 1959.
The invention of the optical telescope brought about the first leap in the quality of lunar observations.
Astronomical observatory, set up in 1966 in the USSR, and now operated by the Russian Academy of Sciences.
Based in the Bolshoi Zelenchuk Valley of the Greater Caucasus near the village of Nizhny Arkhyz, the observatory houses the BTA-6 and RATAN-600, an optical and radio telescope, respectively.
The BTA-6 (Большой Телескоп Альт-азимутальный) is a 6 m aperture optical telescope at the Special Astrophysical Observatory located in the Zelenchuksky District of Karachay-Cherkessia on the north side of the Caucasus Mountains in southern Russia.
Digiscoping is a neologism for afocal photography, using a (digital) camera to record distant images through the eyepiece of an optical telescope.