Results 31 to 40 of about 15,556 (304)
Figure control for a fully segmented telescope mirror [PDF]
Applied Optics, 1982 A system is described to control the figure of a large telescope primary mirror that is composed of many individual segments. The geometry considered, employing hexagonal mirrors, allows a simple and economical control system. The system is shown to be reliable and effective in continuously maintaining the figure to the precision required for optical ...
Mast, T.S., Nelson, J.E.
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In-Situ Metrology of Large Segmented Detector Based on Modified Optical Truss
IEEE Photonics Journal, 2023 To precisely map cosmic structures and capture time-domain events, future large survey telescopes will be equipped with segmented detectors that greatly expand their field of view. Segment flatness and assembly accuracy will be essential for them to make
Qichang An +6 more
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Sensors, 2022 An edge displacement sensor is one of the key technologies for building large segmented mirror astronomical optical telescopes. A digital interface is one novel approach for sensor technologies, digital transformation and the Internet of Things (IoT) in ...
Xiaolong Lu +8 more
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Towards Piston Fine Tuning of Segmented Mirrors through Reinforcement Learning
Applied Sciences, 2020 Unlike supervised machine learning methods, reinforcement learning allows an entity to learn how to deploy a task from experience rather than labeled data.
Dailos Guerra-Ramos +2 more
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Remote Sensing, 2022 A segmented primary mirror is very important for extra-large astronomical telescopes, in order to detect the phase error between segmented mirrors. Traditional iterative algorithms are hard to detect co−phasing aberrations in real time due to the long ...
Yirui Wang +4 more
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Simplification strategies for segmented-mirror splitters in multicore fiber CBC systems [PDF]
, 2022 Paper 112600E, 6 S.A simplification of segmented-mirror splitters for coherent beam combination based on numerical optimization of coating designs is presented.
Klenke, A. +5 more
core +1 more source
Sensors, 2023 The two photon absorption-transient current technique (TPA-TCT) was used to investigate a silicon strip detector with illumination from the top. Measurement and analysis techniques for the TPA-TCT of segmented devices are presented and discussed using a ...
Sebastian Pape +3 more
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Fizeau interferometric cophasing of segmented mirrors
Optics Express, 2012 Segmented mirror telescope designs address issues of mechanical rigidity, but introduce the problem of aligning, or cophasing, the separate segments to conform to the optimum mirror shape. While several solutions have been widely adopted, a few difficulties persist - the introduction of non-common path errors and an artificial division of the problem ...
Anthony C, Cheetham +3 more
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Metrology of IXO mirror segments [PDF]
SPIE Proceedings, 2011 For future x-ray astrophysics mission that demands optics with large throughput and excellent angular resolution, many telescope concepts build around assembling thin mirror segments in a Wolter I geometry, such as that originally proposed for the International X-ray Observatory.
Kai-Wing Chan +3 more
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European Physical Journal C: Particles and Fields, 2022 Events from alpha interactions on the surfaces of germanium detectors are a major contribution to the background in germanium-based searches for neutrinoless double-beta decay.
I. Abt +7 more
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