Results 31 to 40 of about 5,726 (305)
MEMS deformable mirror CubeSat testbed [PDF]
, 2013 To meet the high contrast requirement of 1 × 10[superscript −10] to image an Earth-like planet around a Sun-like star, space telescopes equipped with coronagraphs require wavefront control systems.
Barg, Andrew +23 more
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Literature Review on Adaptive Optics [PDF]
INCAS BulletinAdaptive optics (AO) is defined as a technology developed to compensate for wavefront distortions caused by atmospheric turbulence or microscopic heterogeneities, thereby enhancing image quality in observational astronomy and biological microscopy.
Muaayed F. AL-RAWI, Mhnd FARHAN
doaj +1 more source
CIAO: An on-the-shelf adaptive optics system for astronomers [PDF]
EPJ Web of Conferences, 2023 Since 1990, adaptive optics are used in astronomy to remove the effects of atmospheric turbulence, and then retrieve diffraction-limited images, even in bad seeing conditions.
Dovillaire Guillaume, Leveder Cora
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Terahertz adaptive optics with a deformable mirror [PDF]
Optics Letters, 2018 We report on the wavefront correction of a terahertz (THz) beam using adaptive optics, which requires both a wavefront sensor that is able to sense the optical aberrations, as well as a wavefront corrector. The wavefront sensor relies on a direct 2D electro-optic imaging system composed of a ZnTe crystal and a CMOS camera.
Brossard, Mathilde +3 more
openaire +3 more sources
Active Optics in Astronomy: Freeform Mirror for the MESSIER Telescope Proposal
Mathematical and Computational Applications, 2018 Active optics techniques in astronomy provide high imaging quality. This paper is dedicated to highly deformable active optics that can generate non-axisymmetric aspheric surfaces—or freeform surfaces—by use of a minimum number of actuators ...
Gerard Rene Lemaitre +2 more
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Development of a miniaturized deformable mirror controller [PDF]
SPIE Proceedings, 2016 SPIE Astronomical Telescopes and Instrumentation ...
Bendek, Eduardo +6 more
openaire +2 more sources
A Lorentz Force Actuated Continuous Deformable Polymer Mirror for Wavefront Control
Proceedings, 2017 This paper describes MEMS deformable polymer mirror system for adaptive optics application. This system employs a 4 µm thick SU-8 membrane with a stress balanced double side aluminum coating as a mirror element.
Byoungyoul Park +2 more
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Research on a Decoupling Algorithm for the Dual-Deformable-Mirrors Correction System
Applied Sciences, 2023 Wavefront distortion caused by atmospheric turbulence can be described as different types of aberrations, such as piston, tilt, defocusing, astigmatism, coma and so on.
Jingyuan Liang +3 more
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A rare variant of mirror hand deformity
Journal of Surgical Case Reports, 2023 Abstract Congenital hand and forearm anomalies pose a unique challenge in plastic and pediatric surgery. We present a case report of an 8-months-old girl with a congenital left sided hand and forearm anomaly, provisionally diagnosed as atypical left mirror hand anomaly.
Alwatari, Mohammed +4 more
openaire +2 more sources
Analytic model of a laser-controlled thermally deformable mirror
, 2021 We report on an analytic model of a laser-controlled thermally deformable mirror. The model shows the spatial low pass behavior of such a mirror system regarding the intensity distribution that controls the temperature distribution and the optical phase ...
Mahnke, Peter, Schmid, Elke
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