Results 31 to 40 of about 6,989,374 (162)

3D Measurement Simulation and Relative Pointing Error Verification of the Telescope Mount Assembly Subsystem for the Large Synoptic Survey Telescope

Sensors, 2018
An engineering validation of a large optical telescope consists of executing major performing tests at the subsystem level to verify the overall engineering performance of the observatory.
Unai Mutilba, Gorka Kortaberria, Fernando Egaña, Jose Antonio Yagüe-Fabra   +3 more
doaj   +1 more source

The effect of proton damage on the X-ray spectral response of MOS CCDs for the swift X-ray telescope [PDF]

, 2002
The effect of non-ionising energy loss(NIEL) of protons in charge-coupled devices is to displace silicon atoms and any dopant materials present from their lattice positions to form lattice defects which in turn can trap electrons [1].
Abbey, AF, Ambrosi, RM, R.M Ambrosi, Wells, A, Smith, D, A.A Wells, A.D.T Short, A.F Abbey, D.R Smith, Short, A   +9 more
core   +1 more source

Experimental validation of hydraulic support system for large structures (Translated)

Mechanical Engineering Journal
In the control of a large structure, hydraulic equipment is often used because it requires a large output. In this study, we focus on a telescope as an example of a large structure, and experimentally verify the basic characteristics of the hydraulic ...
Tomoya HATTORI, Noboru KAWAGUCHI, Yutaka EZAKI, Junji TAKAKI, Masao SAITO, Masahiro SUGIMOTO, Satoshi SATOH, Katsuhiko YAMADA   +7 more
doaj   +1 more source

On-sky single-mode fiber coupling measurements at the Large Binocular Telescope

, 2016
The demonstration of efficient single-mode fiber (SMF) coupling is a key requirement for the development of a compact, ultra-precise radial velocity (RV) spectrograph.
Crass, Jonathan, Ketterer, Ryan, Fernando Pedichini, Bechter, Eric, Gaudi, Scott, Runburg, Elliott, Foley, Michael, Justin R. Crepp, Giuseppina Micela, Jonathan Crass, Scott Gaudi, Hinz, Philip, Michael Foley, Pedichini, Fernando, Micela, Giuseppina, Pagano, Isabella, Ryan Ketterer, Andrew Bechter, Eric Bechter, Elliott Runburg, Eleanya E. Onuma, Woodward, Charles E., Onuma, Eleanya E., Robert O. Reynolds, Charles E. Woodward, Crepp, Justin R., Isabella Pagano, Bechter, Andrew, Philip Hinz, Reynolds, Robert O.   +29 more
core   +1 more source

Design and Preliminary Ground Experiment for Robotic Assembly of a Modular Space Telescope

IEEE Access, 2019
Large-aperture space telescope is the key equipment for studying the origin and evolution of the universe and various celestial bodies. Developing large-aperture space telescope is challenging and has become a priority in the field of optical engineering.
Zainan Jiang, Zhiqi Li, Chongyang Li, Dapeng Yang, Hong Liu   +4 more
doaj   +1 more source

Modelling and design of a coupled system of multiple hydraulic systems and large structures

Nihon Kikai Gakkai ronbunshu
Control of large structures often involves the use of hydraulic equipment due to the large power requirements. In this study, a large telescope is taken as an example of a large structure.
Tomoya HATTORI, Satoshi SATOH, Katsuhiko YAMADA   +2 more
doaj   +1 more source

Observation of Io's Resurfacing via Plume Deposition Using Ground‐Based Adaptive Optics at Visible Wavelengths With LBT SHARK‐VIS

Geophysical Research Letters
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes on Io's surface have been monitored from both spacecraft and ground‐based telescopes.
Al Conrad, Fernando Pedichini, Gianluca Li Causi, Simone Antoniucci, Imke dePater, Ashley Gerard Davies, Katherine deKleer, Roberto Piazzesi, Vincenzo Testa, Piero Vaccari, Martina Vicinanza, Jennifer Power, Steve Ertel, Joseph C. Shields, Sam Ragland, Fabrizio Giorgi, Stuart M. Jefferies, Douglas Hope, Jason Perry, David A. Williams, David M. Nelson   +20 more
doaj   +1 more source

Active Surface Compensation for Large Radio Telescope Antennas

International Journal of Antennas and Propagation, 2018
With the development of radio telescope antennas with large apertures, high gain, and wide frequency bands, compensation methods, such as mechanical or electronic compensation, are obviously essential to ensure the electrical performance of antennas that
Congsi Wang, Haihua Li, Kang Ying, Qian Xu, Na Wang, Baoyan Duan, Wei Gao, Lan Xiao, Yuhu Duan   +8 more
doaj   +1 more source

Infrared photometry with 'wall-eyed' pointing at the Large Binocular Telescope

, 2016
The brightness and variability of the atmosphere in the thermal infrared poses obstacles to precision photometry measurements. The need to remove atmospheric effects calls for the use of a comparison star, but it is usually impossible to fit both science
John M. Hill, Philip M. Hinz, Skemer, Andrew, Hill, John M., Eckhart Spalding, Andrew Skemer, Spalding, Eckhart, Hinz, Philip M.   +7 more
core   +1 more source

CTAO Instrument Response Functions - prod5 version v0.1

, 2021
CTAO Instrument Response Functions - prod5 version v0.1 The CTA Observatory (CTAO) will provide very wide energy range and excellent angular resolution and sensitivity in comparison to any existing gamma-ray detector.
Consortium, Cherenkov Telescope Array
core   +1 more source