Results 31 to 40 of about 174,204 (270)

Beam Maps of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Measured With a Drone

IEEE Open Journal of Antennas and Propagation
We present beam measurements of the CHIME telescope using a radio calibration source deployed on a drone payload. During test flights, the pulsing calibration source and the telescope were synchronized to GPS time, enabling in-situ background subtraction
Will Tyndall, Alex Reda, J. Richard Shaw, Kevin Bandura, Arnab Chakraborty, Mark Halpern, Maile Harris, Emily Kuhn, Joshua Maceachern, Juan Mena-Parra, Laura B. Newburgh, Anna Ordog, Tristan Pinsonneault-Marotte, Anna Rose Polish, Ben Saliwanchik, Pranav Sanghavi, Seth R. Siegel, Audrey Whitmer, Dallas Wulf   +18 more
doaj   +1 more source

Gaia science alerts and the observing facilities of the Serbian-Bulgarian mini-network telescopes [PDF]

Serbian Astronomical Journal, 2014
The astrometric European Space Agency (ESA) Gaia mission was launched in December 19, 2013. One of the tasks of the Gaia mission is production of an astrometric catalog of over one billion stars and more than 500000 extragalactic sources.
Damljanović G., Vince O., Boeva S.
doaj   +1 more source

Tagging single muons and other long-flying relativistic charged particles by ultra-fast timing in air Cherenkov telescopes [PDF]

, 2006
Atmospheric air Cherenkov telescopes are successfully used for ground-based, very high-energy (VHE) gamma ray astronomy. Triggers from the so-called single muon and other long-flying relativistic charged particle events are an unwanted background for the
Bartko, Cabot, Chitnis, D. Sobczynska, E. Lorenz, M. Teshima, R. Mirzoyan, Vacanti, Weekes   +8 more
core   +2 more sources

LBT Italia: Current Achievements and Future Directions

Instruments
The Large Binocular Telescope (LBT) is a world-leading astronomical observatory, where the Italian partnership has played an important role in increasing the telescope’s productivity, both through an optimized observing strategy and through peer-reviewed
Silvia Tosi, Ester Marini, Felice Cusano, Andrea Rossi, Roberto Speziali, Roberta Carini   +5 more
doaj   +1 more source

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

Solar surveillance with CLIMSO: instrumentation, database and on-going developments

Journal of Space Weather and Space Climate, 2020
CLIMSO is a suite of solar telescopes installed at Pic du Midi observatory in the southwest of France. It consists of two refractors that image the full solar disk in Hα and CaII K, and two coronagraphs that capture the prominences and ejections of ...
Pitout Frédéric, Koechlin Laurent, López Ariste Arturo, Dettwiller Luc, Glorian Jean-Michel   +4 more
doaj   +1 more source

VERITAS Distant Laser Calibration and Atmospheric Monitoring

, 2008
As a calibrated laser pulse propagates through the atmosphere, the intensity of the Rayleigh scattered light arriving at the VERITAS telescopes can be calculated precisely. This allows for absolute calibration of imaging atmospheric Cherenkov telescopes (
C. M. Hui, Felix A. Aharonian, Frank Rieger, null null, Werner Hofmann   +4 more
core   +1 more source

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

Advanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid, Demeng Feng, Pournima Narayanan, Justin S. Edwards, Manchen Hu, Emma Belliveau, Minjeong Kim, Shenwei Yin, Sanket Deshpande, Chenghao Wan, Linda Pucurimay, David A. Czaplewski, Daniel N. Congreve, Mikhail A. Kats   +13 more
wiley   +1 more source

TALON - The Telescope Alert Operation Network System: Intelligent Linking of Distributed Autonomous Robotic Telescopes

, 2004
The internet has brought about great change in the astronomical community, but this interconnectivity is just starting to be exploited for use in instrumentation.
Davis, H., Galassi, M., Starr, D., Vestrand, W. T., White, R. R., Wozniak, P., Wren, J.   +6 more
core   +1 more source

Synergistic Fluorine and Cyanide Co‐Modification to Reinforce Photoinduced Excitons Formation and Transfer for Efficient CO2 Photoreduction

Advanced Functional Materials, EarlyView.
An advanced F‐doped and ─CN group co‐modified FCCN is developed. Due to the synergistic effects of co‐modification in promoting photogenerated exciton generation, enhancing charge kinetics, expanding active interfacial areas, and optimizing CO2 interfacial reactions, the FCCN photocatalyst demonstrates excellent catalytic performance and high ...
Sheng‐Qi Guo, Qingqing Dong, Xiaodong Sun, Ziqi Zhang, Linda Wang, Lei Bao, Bozhan Li, Hui Li, Yanrui Li, Tianyi Ma   +9 more
wiley   +1 more source