Strehl ratio
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Strehl ratio — The modern definition of the Strehl ratio is the ratio of the observed peak intensity at the detection plane of a telescope or other imaging system from a point source compared to the theoretical maximum peak intensity of a perfect imaging system … Wikipedia
Strehl — ist der Familienname von: Carl Strehl (1886–1971), Mitgründer und Direktor der Deutschen Blindenstudienanstalt sowie Honorarprofessor für Blindenwesen an der Philipps Universität in Marburg Dietmar Strehl (* 1956), deutscher Betriebswirtschaftler … Deutsch Wikipedia
Cociente de Strehl — El Cociente de Strehl o Relación Strehl, llamado así por el físico y matemático alemán Karl Strehl (1864 1940), es una medida de la calidad óptica de los telescopios y otros instrumentos de proyección de imagen. Se define como el cociente entre… … Wikipedia Español
Laser beam profiler — A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers ultraviolet, visible, infrared, continuous… … Wikipedia
David L. Fried — is a scientist, best known for his contributions to optics. Fried described what has come to be known as Fried s seeing diameter, or r0 (usually pronounced r naught). The seeing diameter is effectively a limiting aperture due to atmospheric… … Wikipedia
Optical transfer function — The optical transfer function (OTF) of an imaging system (camera, video system, microscope etc) is the true measure of resolution (image sharpness) that the system is capable of. The common practice of defining resolution in terms of pixel count… … Wikipedia
Speckle imaging — (also known as video astronomy ) describes a range of high resolution astronomical imaging techniques based either on the shift and add ( image stacking ) method or on speckle interferometry methods. These techniques can dramatically increase the … Wikipedia
Optical lens design — refers to the calculation of lens construction parameters (variables) that will meet a set of performance requirements and constraints, including cost and schedule limitations. Construction parameters include surface profile types (spherical,… … Wikipedia
Ray tracing (physics) — In physics, ray tracing is a method for calculating the path of waves or particles through a system with regions of varying propagation velocity, absorption characteristics, and reflecting surfaces. Under these circumstances, wavefronts may bend … Wikipedia
SR — 1. Schedule Result (NCC MPT Message) Contributor: GSFC 2. Service Request Contributor: GSFC, MSFC 3. Sounding Rocket Contributor: MSFC 4. Status Register (Computer science) Contributor: LaRC 5. Strehl Ratio Contributor: GSFC … NASA Acronyms
Bernhard Schmidt — Bernhard Woldemar Schmidt (March 30, 1879 ndash; December 1, 1935) was an Estonian Swede optician who spent his adult life in Germany. In 1930 he invented the Schmidt telescope which corrected for the optical errors of spherical aberration, coma … Wikipedia
