Results 41 to 50 of about 51,201 (322)

Comparison of beam combiners for a synthetic aperture imaging telescope [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
Future astronomical space missions will comprise a constellation of several optical telescopes to detect exo-planets by interferometric nulling of starlight.
van der Avoort Casper, Pereira Silvania F., Braat Joseph J.M., den Herder Jan-Willem   +3 more
doaj   +1 more source

Adaptive Optics Simulations for Siding Spring

, 2012
Using an observational derived model optical turbulence profile (model-OTP) we have investigated the performance of Adaptive Optics (AO) at Siding Spring Observatory (SSO), Australia.
Goodwin, Michael, Jenkins, Charles, Lambert, Andrew   +2 more
core   +1 more source

Constrained matched filtering for extended dynamic range and improved noise rejection for Shack-Hartmann wavefront sensing [PDF]

, 2008
We recently introduced matched filtering in the context of astronomical Shack-Hartmann wavefront sensing with elongated sodium laser beacons [Appl. Opt. 45, 6568 (2006)].
Ellerbroek, B. L., Gilles, L.
core   +1 more source

An X-ray polarimeter for hard X-ray optics [PDF]

, 2006
Development of multi-layer optics makes feasible the use of X-ray telescope at energy up to 60-80 keV: in this paper we discuss the extension of photoelectric polarimeter based on Micro Pattern Gas Chamber to high energy X-rays.
Baldini, Luca, BE Turner, Mjl, Bellazzini, Ronaldo, Bitti, Francesco, Brez, Alessandro, Canestrari, Rodolfo, Cavalca, Francesco, Citterio, Oberto, Costa, Enrico, Cotroneo, Vincenzo, Feroci, Marco, Hasinger, G., Latronic, Luca, Lazzarotto, Francesco, Massai, MARCO MARIA, Matt, Giorgio, Morelli, Ennio, Muleri, Fabio, Omodei, Nicola, Pacciani, Luigi, Pareschi, Giovanni, Perola Giuseppe, Cesare, Pinchera, Michele, Rubini, Alda, Sgro, Carmelo, Soffitta, Paolo, Spandre, Gloria, Spiga, Daniele   +27 more
core   +3 more sources

Surface figure metrology for reflective membrane mirrors based on phase-measuring deflectometry

Frontiers in Astronomy and Space Sciences
Reflective membrane mirrors provide a lightweight, low-cost alternative to traditional optics for next-generation large-aperture telescopes, but their non-rigid, thin structure poses challenges for surface metrology.
Xin Yan, Xin Yan, Xin Yan, Zhi-Kang Zhuang, Zhi-Kang Zhuang, Fu-Jia Du, Fu-Jia Du, Wen Duan, Wen Duan, Peilin Yin, Mo-Nong Yu, Guang Yang, Guang Yang   +12 more
doaj   +1 more source

Commissioning ShARCS: the Shane Adaptive optics infraRed Camera-Spectrograph for the Lick Observatory 3-m telescope

, 2014
We describe the design and first-light early science performance of the Shane Adaptive optics infraRed Camera-Spectrograph (ShARCS) on Lick Observatory's 3-m Shane telescope. Designed to work with the new ShaneAO adaptive optics system, ShARCS is capable
Alcott, Barry, Cowley, David, Deich, William, Dillon, Daren, Gates, Elinor, Gates, John, Gavel, Donald, Kupke, Renate, Lanclos, Kyle, McGurk, Rosalie, Norton, Andrew, Peck, Michael, Pfister, Terry, Rockosi, Constance, Sandford, Dale, Saylor, Mike, Srinath, Srikar, Ward, Jim, Weiss, Jason   +18 more
core   +1 more source

Artificial Intelligence in Astronomical Optical Telescopes: Present Status and Future Perspectives

Universe
With new artificial intelligence (AI) technologies and application scenarios constantly emerging, AI technology has become widely used in astronomy and has promoted notable progress in related fields.
Kang Huang, Tianzhu Hu, Jingyi Cai, Xiushan Pan, Yonghui Hou, Lingzhe Xu, Huaiqing Wang, Yong Zhang, Xiangqun Cui   +8 more
doaj   +1 more source

Adaptive Optics for Extremely Large Telescopes

, 2019
Adaptive Optics has become a key technology for the largest ground-based telescopes currently under or close to begin of construction. Adaptive optics is an indispensable component and has basically only one task, that is to operate the telescope at its ...
Hippler, Stefan
core   +1 more source

Nanoscale Mapping of Plasmonic Charge Transport in Nano‐Resonators Based on Resistive Switching Materials

Advanced Functional Materials, EarlyView.
In this strategy, a conductive nano‐probe is employed to induce nanoscale phase transitions and map the nanoscale conductivity and trap density of GST films. By utilizing the contrasting properties of phase‐change states, nano‐resonators are fabricated that exhibit plasmonic conduction and dramatically different transport characteristics.
Sunwoo Bang, Seunghyo Park, Shashank Shekhar, Yuhyeon Oh, Seunghun Hong   +4 more
wiley   +1 more source

Quantum Astronomy at the University and INAF Astronomical Observatory of Padova, Italy

Astronomy, 2023
Twenty years ago, we started to apply quantum optics to the astronomical research carried out inside the Department of Physics and Astronomy and the INAF Astronomical Observatory in Padova, Italy.
Cesare Barbieri, Giampiero Naletto, Luca Zampieri   +2 more
doaj   +1 more source