Results 81 to 90 of about 368,356 (303)

End to end numerical simulations of the MAORY multiconjugate adaptive optics system

, 2014
MAORY is the adaptive optics module of the E-ELT that will feed the MICADO imaging camera through a gravity invariant exit port. MAORY has been foreseen to implement MCAO correction through three high order deformable mirrors driven by the reference ...
Arcidiacono, Carmelo, Bregoli, Giovanni, Butler, R. C., Ciliegi, Paolo, Cosentino, Giuseppe, Diolaiti, Emiliano, Foppiani, Italo, Lombini, Matteo, Schreiber, Laura   +8 more
core   +1 more source

A Single Waveguide Spectrometer via Defect Scattering

IEEE Photonics Journal
Miniaturized spectrometers show great application potential in biology, medicine, astronomy and so on. However, it is still challenging to obtain broadband spectrum and high spectral resolution simultaneously with limited size. In this study, we proposed
Xue Tong, Zhenning Zhao, Yunxian Zhong, Dong Lin, Zhuangzhuang Zhu, Qing Zhong, Jinping He   +6 more
doaj   +1 more source

Astronomical Tasks for Tests of X-Ray Optics in VZLUSAT-1 Nanosatellite

Advances in Astronomy, 2017
VZLUSAT-1 nanosatellite (scheduled launch in spring 2017 from India) is a CubeSat mission which, besides other instrumentation, contains X-ray desk to perform efficiency tests of the X-ray optics.
Martin Blazek, Petr Pata, Adolf Inneman, Petr Skala   +3 more
doaj   +1 more source

Geometry‐Dependent Adhesion in Transparent Monodomain Liquid Crystal Elastomers

Advanced Functional Materials, EarlyView.
Liquid Crystal Elastomers (LCEs) are emerging as exciting pressure‐sensitive adhesives. We examine adhesion in chemically identical elastomer films, exploring the influence of geometry (director orientation) and phase (nematic or isotropic). We demonstrate the potential of these aligned films as transparent, tunable, broad‐temperature‐range smart ...
Aidan Street, Devesh Mistry, Johan Mattsson, Helen F. Gleeson   +3 more
wiley   +1 more source

Cryogenic Volume-Phase Holograpic Grisms for MOIRCS

, 2011
We have developed high dispersion VPH (volume phase holographic) grisms with zinc selenide (ZnSe) prisms for the cryogenic optical system of MOIRCS (Multi-Object near InfraRed Camera and Spectrograph) for Y-, J-, H- and K- band observations.
Ebizuka, Noboru, Hanesaka, Mai, Ichikawa, Takashi, Ichiyama, Kotaro, Iye, Masanori, Kashikawa, Nobunari, Kodate, Kashiko, Maruyama, Miyoko, Onodera, Masato, Shimasaku, Kazuhiro, Tanaka, Ichi, Tokoku, Chihiro, Uchimoto, Yuka Katsuno, Yamada, Toru, Yoshikawa, Tomohiro   +14 more
core   +1 more source

Astrometric Calibration of MagAO-X with Updated Solutions for HD 165054 Field Stars

The Astronomical Journal
MagAO-X is a recently commissioned extreme adaptive optics instrument for the Magellan Clay 6.5 m telescope at Las Campanas Observatory in Chile. MagAO-X had first light in 2019 and subsequent commissioning observations in 2022 and 2023.
Joseph D. Long, Logan Pearce, Sebastiaan Y. Haffert, Jared R. Males, Laird M. Close, Olivier Guyon, Warren B. Foster, Kyle Van Gorkom, Alexander D. Hedglen, Maggie Y. Kautz, Jay K. Kueny, Jialin Li, Jennifer Lumbres, Eden A. McEwen, Avalon L. McLeod, Lauren Schatz   +15 more
doaj   +1 more source

Multipurpose Transparent Nanocomposites for Gamma Spectroscopy, Pulse Shape Discrimination, Thermal Neutron Detection, Radiation Shielding, and High Refractive Index Applications

Advanced Functional Materials, EarlyView.
Materials exist that are useful for gamma scintillation, radiation shielding, neutron‐gamma pulse shape discrimination (PSD), thermal neutron detection, or high refractive index applications. While certain materials have exhibited optimal performance for each of these applications, none achieve multiple functions.
Isabelle Winardi, Stephane Miaule, Robert Carmichael, Bowen Sun, Ziqing Han, Prabhav Surabhi, Zhen Luo, Noelan Hum, David Prout, Yi‐An Chen, Ting‐Hsuan Wu, Hao Yu, Arion Chatziioannou, Qibing Pei   +13 more
wiley   +1 more source

Characterization of an Optical Transfer Function–based Phasing Technique for India’s Large Segmented Mirror Telescope

The Astronomical Journal
The upcoming 10 m class large Indian telescope is proposed to be built using segmented mirror technology. To achieve diffraction-limited image quality with a segmented mirror telescope, it is important to phase mirror segments with very high precision ...
Radhika Dharmadhikari, Padmakar Parihar
doaj   +1 more source

Mapping Nanoscale Buckling in Atomically Thin Cr2Ge2Te6

Advanced Functional Materials, EarlyView.
Atomic‐resolution STEM is used to resolve nanoscale buckling in monolayer Cr2Ge2Te₆. A noise‐robust image analysis reconstructs three‐dimensional lattice distortions from single plan‐view images, revealing pronounced defect‐driven nm‐scale out‐of‐plane buckling.
Amy Carl, Nicholas Clark, David G. Hopkinson, Matthew Hamer, Matthew Watson, Laxman Nagireddy, James E. Nunn, Alexei Barinov, Yichao Zou, William Thornley, Casey Cheung, Wendong Wang, Sam Sullivan‐Allsop, Xiao Li, Astrid Weston, Eli G. Castanon, Andrey V Kretinin, Cephise Cacho, Neil R. Wilson, Sarah J. Haigh, Roman Gorbachev   +20 more
wiley   +1 more source

SimCADO - an instrument data simulator package for MICADO at the E-ELT

, 2016
MICADO will be the first-light wide-field imager for the European Extremely Large Telescope (E-ELT) and will provide difiraction limited imaging (7mas at 1.2mm) over a ~53 arcsecond field of view. In order to support various consortium activities we have
Alves, Joao, Czoske, Oliver, Kausch, Wolfgang, Kleijn, Gijs Verdoes, Köhler, Rainer, Leschinski, Kieran, Mach, Michael, Przybilla, Norbert, Zeilinger, Werner   +8 more
core   +1 more source