A report on Telescope, Refracting telescope and Light

The 100-inch (2.54 m) Hooker reflecting telescope at Mount Wilson Observatory near Los Angeles, USA, used by Edwin Hubble to measure galaxy redshifts and discover the general expansion of the universe.
A 200 mm refracting telescope at the Poznań Observatory
A triangular prism dispersing a beam of white light. The longer wavelengths (red) and the shorter wavelengths (blue) are separated.
17th century telescope
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The electromagnetic spectrum, with the visible portion highlighted
The 60-inch Hale (debuted in 1908) considered to be the first modern large research reflecting telescope.
Optical diagram of Galilean telescope y – Distant object; y′ – Real image from objective; y″ – Magnified virtual image from eyepiece; D – Entrance pupil diameter; d – Virtual exit pupil diameter; L1 – Objective lens; L2 – Eyepiece lens e – Virtual exit pupil – Telescope equals
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The primary mirror assembly of James Webb Space Telescope under construction. This is a segmented mirror and its coated with Gold to reflect (orange-red) visible light, through near-infrared to the mid-infrared
Engraved illustration of a 150 ft focal length Keplerian astronomical refracting telescope built by Johannes Hevelius.
Beam of sun light inside the cavity of Rocca ill'Abissu at Fondachelli-Fantina, Sicily
Modern telescopes typically use CCDs instead of film for recording images. This is the sensor array in the Kepler spacecraft.
Alvan Clark polishes the big Yerkes achromatic objective lens, over 1 meter across, in 1896.
Due to refraction, the straw dipped in water appears bent and the ruler scale compressed when viewed from a shallow angle.
A 1.2-meter (47 in) reflecting telescope
This 12 inch refractor is mounted in dome and a mount the rotates with the turn of the Earth
Hong Kong illuminated by colourful artificial lighting.
Binoculars
The Greenwich 28-inch refractor is a popular tourist attraction in 21st century London
Pierre Gassendi.
The Very Large Array at Socorro, New Mexico, United States.
The Apochromatic lens usually comprises three elements that bring light of three different frequencies to a common focus
Christiaan Huygens.
Einstein Observatory was a space-based focusing optical X-ray telescope from 1978.
The 102 cm refractor, at Yerkes Observatory, the largest achromatic refractor ever put into astronomical use (photo taken on 6 May 1921, as Einstein was visiting)
Thomas Young's sketch of a double-slit experiment showing diffraction. Young's experiments supported the theory that light consists of waves.
The Compton Gamma Ray Observatory is released into orbit by the Space Shutte in 1991, and it would operate until the year 2000
The "Große Refraktor" a double telescope with a 80cm (31.5") and 50 cm (19.5") lenses, was used to discover calcium as an interstellar medium in 1904.
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The reflectors of HEGRA detect flashes of light in the atmosphere, thus detecting high energy particles
Astronaut trains with camera with large lens
Equatorial-mounted Keplerian telescope
Touristic telescope pointed to Matterhorn in Switzerland
A diagram of the electromagnetic spectrum with the Earth's atmospheric transmittance (or opacity) and the types of telescopes used to image parts of the spectrum.
The Yerkes Great refractor mounted at the 1893 World's Fair in Chicago; the tallest, longest, and biggest aperture refactor up to that time.
Six views of the Crab nebula supernova remnant, viewed at different wavelengths of light by various telescopes
The 68 cm refractor at the Vienna University Observatory
The Five-hundred-meter Aperture Spherical radio Telescope in Guizhou, China, is the world's largest filled-aperture radio telescope

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 dioptric telescope).

- Refracting telescope

The first known practical telescopes were refracting telescopes with glass lenses and were invented in the Netherlands at the beginning of the 17th century.

- Telescope

The objective in a refracting telescope refracts or bends light.

- Refracting telescope

Using a telescope, Rømer observed the motions of Jupiter and one of its moons, Io.

- Light

Optical telescopes, using visible light

- Telescope

Magnifying glasses, spectacles, contact lenses, microscopes and refracting telescopes are all examples of this manipulation.

- Light
The 100-inch (2.54 m) Hooker reflecting telescope at Mount Wilson Observatory near Los Angeles, USA, used by Edwin Hubble to measure galaxy redshifts and discover the general expansion of the universe.

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