Astronomy   View all facts   Glossary   Help

physical object > artifact > device > instrument > telescope > electromagnetic telescope > reflector

reflector
subject			fact

reflector	has mirror maker the person, company or institution that created the mirror
	has mirror type material and other engineering details
	has mirror diameter equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)
	has secondary mirror shape
	has primary mirror shape
	has aperture or primary mirror diameter
	has definition Telescope that uses mirrors to magnify and focus an image onto an eyepiece. (reflector)
	has definition A device for gathering and amplifying light or other energy by means of a mirror.
	is a kind of electromagnetic telescope
telescope	has wavelength sensitivity
	has angular resolving power
	has effective diameter
	has focal ratio
	has operator
	has purpose observe celestial objects
	has location
artifact	has creator
	has creation date
	has owner
physical object	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of reflector :

• 2.3-meter Telescope (15 facts) (Vainu Bappu 2.3 m)
• Anglo-Australian Telescope (15 facts) (AAT)
• Astrophysical Research Consortium Telescope (14 facts) (ARC 3.5 m)
• Byurakan 2.6-meter Reflector (13 facts) (Byurakan 102 inch)
• Canada-France-Hawaii Telescope (15 facts) (CFHT)
• Cassegrain (7 kinds, 118 facts) - An optical arrangement in which light rays striking the parabolic concave primary mirror of a reflecting telescope are reflected to the hyperbolic convex secondary mirror, and re-reflected through a hole bored in the primary to a focus behind it., Refers to a design of reflecting telescopes in which the light collected and focussed by the large concave primary mirror is refocussed by a smaller convex secondary mirror on the same axis as the primary. The refocussed beam passes through a central hole cut into the primary mirror and emerges behind the primary., Telescope devised by Cassegrain in which an auxiliary convex mirror reflects the magnified image, upside down, through a hole in the center of the main objective mirror - i.e., through the end of the telescope itself. It was, however, no improvement on the gregorian telescope invented probably slightly earlier.
• ESO 3.6-meter Telescope (15 facts) (ESO 3.6 m)
• Gregorian (4 facts) - A class of reflecting telescope which uses a concave secondary mirror placed after the prime focus is reached instead of a convex secondary placed before the prime focus., Telescope devised - but never constructed - by James Gregory, in which an auxiliary concave mirror reflects the magnified image, the right way up, through a hole in the centre of the main objective mirror, i.e., through the end of the telescope itself. The Cassegrain telescope is similar but produces an inverted image.
• Hobby-Eberly Telescope (16 facts)
• Isaac Newton Telescope (16 facts) (Isaac Newton 98 inch)
• Magellan Project (17 facts) (Magellan I)
• Maksutov telescope (3 facts) - A reflector whose primary mirror is spheroidal instead of parabolic. The light initially passes through a large concave lens to remove the spherical aberration.
• MMT Telescope (15 facts)
• Mount Stromlo 2.3-meter (14 facts)
• Newtonian (1 kind, 21 facts) - A class of reflecting telescope developed by Sir Issac Newton with a paraboloidal primary mirror and a small, plane secondary mirror at 45°; to deflect the focus of the primary to a position outside the tube near the top of the telescope.
• reflector with corrector plate (3 facts)
• Ritchey-Chrétien (19 kinds, 294 facts) - A class of reflecting telescope with a hyperbolic primary and secondary., A system of two mirrors, aspherized to give an image at the secondary (Cassegrain) focus free from spherical aberration and coma.
• Schmidt (12 kinds, 181 facts) - Telescopic camera incorporating an internal corrective lens or plate that compensates for optical defects and chromatic faults in the main mirror. The system was invented by Bernhard Schmidt., A telescope with a spherical primary mirror and a thin refractive corrector plate with a complex, non-spherical shape. Very wide-field performance for surveys., A type of reflecting telescope (more accurately, a large camera) in which the coma produced by a spherical concave mirror is compensated for by a thin correcting lens placed at the opening of the telescope tube. The Schmidt has a usable field of 0^°.6.
• segmented mirror telescope (4 kinds, 44 facts) - a reflecting telescope whose mirror is composed of multiple segments
• Shajn 2.6-m Reflector (11 facts) (Crimean 102 inch)
• Southern African Large Telescope (15 facts) (SALT)
• William Herschel Telescope (16 facts) (WHT)
• Wisconsin-Indiana-Yale-NOAO Telescope (16 facts) (WIYN 3.5 m)

Next electromagnetic telescope: space telescope    Up: electromagnetic telescope    Previous electromagnetic telescope: radio telescope