Results 51 to 60 of about 494,194 (336)

L’observatoire de Juvisy-sur-Orge, l’« univers d’un chercheur » à sauvegarder

In Situ, 2017
In 1882, Camille Flammarion was given a property at Juvisy-sur-Orge by one of his admirers. He transformed the house into an astronomical observatory and installed what was for its day advanced scientific equipment.
Colette Aymard, Laurence-Anne Mayeur
doaj   +1 more source

Low Vision Aids: Visual Outcomes and Barriers in Children with Low Vision

Delhi Journal of Ophthalmology, 2019
Aims: To study the demographic profile, cause of low vision, visual outcome and the barriers in using low vision aids (LVA). Design: Prospective observational clinical study.
V. R. Venkataramanan, Sairani Karanam, Vinaya Kumar Konana, Sudhakar Potti, Netra Harsha, S. Shruthi   +5 more
doaj   +1 more source

Active optics: deformable mirrors with a minimum number of actuators [PDF]

Journal of the European Optical Society-Rapid Publications, 2012
We present two concepts of deformable mirror to compensate for first order optical aberrations. Deformation systems are designed using both elasticity theory and Finite Element Analysis in order to minimize the number of actuators.
Laslandes M., Hugot E., Ferrari M.
doaj   +1 more source

Software design for the control system for Small-Size Telescopes with single-mirror of the Cherenkov Telescope Array

, 2015
The Small-Size Telescope with single-mirror (SST-1M) is a 4 m Davies-Cotton telescope and is among the proposed telescope designs for the Cherenkov Telescope Array (CTA). It is conceived to provide the high-energy ($>$ few TeV) coverage.
Bilnik, W., Bogacz, L., Borkowski, J., Bulik, T., Błocki, J., Cadoux, F., Christov, A., Curyło, M., della Volpe, D., Dyrda, M., Favre, Y., Frankowski, A., Grudnik, Ł., Grudzińska, M., Heller, M., Idźkowski, B., Jamrozy, M., Janiak, M., Kasperek, J., Lalik, K., Lyard, E., Mach, E., Mandat, D., Marszałek, A., Michałowski, J., Moderski, R., Montaruli, T., Neronov, A., Niemiec, J., Ostrowski, M., Paśko, P., Pech, M., Porcelli, A., Porcelli, A., Prandini, E., Pujadas, I. Troyano, Rajda, P., Rameez, M., Schioppa, E. jr, Schovanek, P., Seweryn, K., Skowron, K., Sliusar, V., Sowiński, M., Stawarz, Ł., Stodulska, M., Stodulski, M., Toscano, S., Walter, R., Wiȩcek, M., Zagdański, A., Ziȩtara, K., Zychowski, P.   +52 more
core   +1 more source

A Trigger Interface Board to manage trigger and timing signals in CTA Large-Sized Telescope and Medium-Sized Telescope cameras [PDF]

, 2017
One of the main goals of the Cherenkov Telescope Array (CTA) observatory is to improve the $\gamma$-ray detection sensitivity by an order of magnitude, compared to the current ground-based observatories. Widening the energy coverage down to 20 GeV and up
Barrio, Juan Abel, Cherenkov Telescope Array Consortium, López, Marcos, Peñil, Pablo, Tejedor, Luis Ángel   +4 more
core   +1 more source

The MAGIC telescope [PDF]

Proceedings of International Europhysics Conference on High Energy Physics — PoS(HEP2005), 2007
MAGIC (Major Atmospheric Gamma Imaging Cherenkov telescope) is presently the largest ground-based gamma ray telescope. MAGIC has been taking data regularly since October 2004 at the Roque de los Muchachos Observatory on the island of La Palma. In this paper the MAGIC telescope status, its performances and some preliminary results on observed gamma ray ...
openaire   +3 more sources

Cerenkov Events Seen by The TALE Air Fluorescence Detector [PDF]

, 2013
The Telescope Array Low-Energy Extension (TALE) is a hybrid, Air Fluorescence Detector (FD) / Scintillator Array, designed to study cosmic ray initiated showers at energies above $\sim3\times10^{16}$ eV. Located in the western Utah desert, the TALE FD is
Abu-Zayyad, Tareq, Collaboration, Telescope-Array   +1 more
core  

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

Advanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong, Zhangbin Ji, Luke Haworth, Yihao Guo, Jaime del Moral, Stefan Jacob, Ana Borras, Agustin R. Gonzalez‐Elipe, Jikai Zhang, Jian Zhou, Glen McHale, Yong‐Qing Fu   +11 more
wiley   +1 more source

Telescopic Network of Zhulong for Orbit Determination and Prediction of Space Objects

Remote Sensing
The increasing proliferation of space debris, intermittent space incidents, and the rapid emergence of massive LEO satellite constellations pose significant threats to satellites in orbit.
Xiangxu Lei, Zhendi Lao, Lei Liu, Junyu Chen, Luyuan Wang, Shuai Jiang, Min Li   +6 more
doaj   +1 more source

Monte Carlo comparison of mid-size telescope designs for the Cherenkov Telescope Array [PDF]

, 2012
The Cherenkov Telescope Array (CTA) is a future very high energy gamma-ray observatory. CTA will be comprised of small-, medium- and large-size telescopes covering an energy range from tens of GeV to hundreds of TeV and will surpass existing telescopes in sensitivity by an order of magnitude.
arxiv   +1 more source