Results 21 to 30 of about 15,556 (304)
An Image-Based Alignment Errors Correction Method for Segmented Fresnel Primary Mirror
IEEE Photonics Journal, 2020 The alignment errors correction of segmented Fresnel primary mirror in multiple imaging scenes is simulated. Based on the linear relationship between five kinds of alignment errors and modulation transfer function metric or image frequency domain metric,
Licheng Zhu +5 more
doaj +1 more source
A Tip–Tilt and Piston Detection Approach for Segmented Telescopes
Photonics, 2020 Accurate segmented mirror wavefront sensing and control is essential for next-generation large aperture telescope system design. In this paper, a direct tip–tilt and piston error detection technique based on model-based phase retrieval with multiple ...
Shun Qin, Wai Kin Chan
doaj +1 more source
Research on segmented mirror position error of optical system based on ZEMAX [PDF]
, 2017 We have modeled a segmented mirror optical system by software ZEMAX, and analyzed influence of segmented mirror's position error to the optical system imaging for the first time to author's best knowledge.
Li, Ruichang +10 more
core +1 more source
An Annulus-Sector Segmented Primary Mirror
IEEE Photonics Journal, 2017 Ultrahigh resolution optical imaging with large aperture is increasingly desired in space-based remote sensing and imaging system, but it is usually limited by volume and mass constraints of launch vehicle due to size and weight of the imaging system. In
X. X. Wei, X. J. Wan, B. Yang
doaj +1 more source
Morphing of Segmented Bimorph Mirrors
International Journal of Optomechatronics, 2010 Atmospheric turbulence compensation for the next generation of terrestrial telescopes (30–40 m diameter) will require deformable mirrors of increasing size and a number of actuators reaching several thousands. However, the mere extrapolation of existing designs leads to complicated and extremely expensive mirrors.
Rodrigues, Gonçalo +2 more
openaire +2 more sources
Construction of primary mirror and dimension of segmented sub-aperture. [PDF]
, 2016 Construction of primary mirror and dimension of segmented sub-aperture.
Zongyang Wang (2550940) +3 more
core +1 more source
Asian Journal of Surgery, 2023 Background: Recently, three-dimensional (3D) models have been used more frequently than the traditional two-dimensional (2D) models as an intraoperative guide to ease sculpture of costal cartilages in total auricular aesthetic reconstruction in cases of ...
Eman Nagy Mohamed +4 more
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James Webb Space Telescope optical simulation testbed IV: linear control alignment of the primary segmented mirror and the secondary mirror [PDF]
, 2017 International audienceThe James Webb Space Telescope (JWST) Optical Simulation Testbed (JOST) is a tabletop experiment designed to study wavefront sensing and control for a segmented space telescope, such as JWST.
Mazoyer, Johan +31 more
core +1 more source
Simulative and Experimental Characterization of an Adaptive Astigmatic Membrane Mirror
Micromachines, 2021 Adaptive optical (AO) components play an important role in numerous optical applications, from astronomical telescopes to microscope imaging systems. For most of these AO components, the induced wavefront correction, respectively added optical power, is ...
Ulrich Kallmann +2 more
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Recent results from prototypes of the Fluorescence detector Array of Single-pixel Telescopes (FAST) in both hemispheres [PDF]
EPJ Web of Conferences, 2023 The origin and nature of ultrahigh-energy cosmic rays (UHECRs) are of uppermost importance in astroparticle physics. Motivated by the need for an unprecedented aperture for further advancements, the Fluorescence detector Array of Single-pixel Telescopes (
Fujii Toshihiro +34 more
doaj +1 more source