Results 21 to 30 of about 395 (109)

Atmospheric Propagation Studies and Development of New Instrumentation for Astronomy, Radar, and Telecommunication Applications in the Subterahertz Frequency Range

Applied Sciences, 2022
Current progress in the development of new subterahertz instruments discussed in this paper, including antennas, high-power gyrotrons, and low-noise receivers, provides a wide range of possible applications.
Yurii Balega, Gregory Bubnov, Mikhail Glyavin, Aleksandra Gunbina, Dmitry Danilevsky, Grigory Denisov, Andrey Khudchenko, Ilya Lesnov, Andrey Marukhno, Kirill Mineev, Sergey Samsonov, Gennady Shanin, Vyacheslav Vdovin   +12 more
doaj   +2 more sources

Astroclimate on Mt. Maidanak Observatory by AZT--22 1.5m telescope observations [PDF]

, 2011
Contribution in conference "Comprehensive characterization of astronomical sites", held October 4-10, 2010, in Kislovodsk, Russia 6 pages, 5 ...
А. С. Гусев, Б. П. Артамонов   +1 more
openalex   +3 more sources

VISIONS:the VISTA Star Formation Atlas I. Survey overview [PDF]

, 2023
VISIONS is an ESO public survey of five nearby (d < 500 pc) star-forming molecular cloud complexes that are canonically associated with the constellations of Chamaeleon, Corona Australis, Lupus, Ophiuchus, and Orion.
Alves, João, Arnaboldi, Magda, Ascenso, Joana, Bayo, Amelia, Bouy, Hervé, Brown, Anthony G.A., Brändli, Erik, Forbrich, Jan, Fürnkranz, Verena, Goodman, Alyssa, Grossschedl, Josefa E., Hacar, Alvaro, Hasenberger, Birgit, Hernandez, David, Kubiak, Karolina, Kuhn, Michael, Köhler, Rainer, Lada, Charles, Leschinski, Kieran, Lombardi, Marco, Mardones, Diego, Mascetti, Laura, Meingast, Stefan, Miret-Roig, Núria, Moitinho, André, Muzic, Koraljka, Petr-Gotzens, Monika G., Piecka, Martin, Posch, Laura, Prusti, Timo, Ramlau, Ronny, Ramírez, Karla Peña, Ratzenböck, Sebastian, Rottensteiner, Alena, Sacco, Germano, Swiggum, Cameren, Teixeira, Paula Stella, Urban, Vanessa, Zari, Eleonora, Zucker, Catherine   +39 more
core   +10 more sources

Astroclimatic Conditions at the Hoa Lac and Nha Trang Astronomical Observatories

Atmosphere, 2021
The paper presents the first results of astroclimatic studies at the sites of the Hoa Lac and Nha Trang astronomical observatories. Our study employs Era-5 data covering a 10-yr time period (2011–2020).
Artem Y. Shikhovtsev, Pavel G. Kovadlo, Evgeniy A. Kopylov, Mansur A. Ibrahimov, Huy Le Xuan   +4 more
doaj   +1 more source

Energy Spectra of Atmospheric Turbulence for Calculating $C_n^2$ Parameter. I. Maidanak and Suffa Observatories in Uzbekistan

Atmosphere, 2021
Knowledge of the turbulence spectra is of interest for describing atmospheric conditions as applied to astronomical observations. This article discusses the deformations of the turbulence spectra with heights in a wide range of scales at the sites of the
Artem Yu. Shikhovtsev, Pavel G. Kovadlo, Evgeniy A. Kopylov, Mansur A. Ibrahimov, Shuhrat A. Ehgamberdiev, Yusufjon A. Tillayev   +5 more
doaj   +1 more source

Long-Term Trends of Astroclimatic Parameters above the Terskol Observatory

Atmosphere, 2023
Astroclimatic conditions characterize the quality of an astronomical site. The Terskol Observatory was founded over 42 years ago in 1980. The astronomical site (coordinates 43°16′29″ N, 42°30′03″ E) is located about 10 km from Mt.
Lidia A. Bolbasova, Evgeniy A. Kopylov
doaj   +1 more source

Daytime Cloud Detection Method Using the All-Sky Imager over PERMATApintar Observatory

Universe, 2021
In this study, we explored a new method of cloud detection called the Blue-Green (B-G) Color Difference, which is adapted from the widely used Red-Blue (R-B) Color Difference. The objective of this study was to test the effectiveness of these two methods
Mohammad Afiq Dzuan Mohd Azhar, Nurul Shazana Abdul Hamid, Wan Mohd Aimran Wan Mohd Kamil, Nor Sakinah Mohamad   +3 more
doaj   +1 more source

Astroclimate parameters of the Kyiv observatories

, 2012
Astroclimate parameters such as the atmospheric extinction, the night-sky brightness, and the seeing are studied using the observational data obtained at some Kyiv observatories. The first parameter is determined using the brief Bouguer method. The night-sky brightness is calculated using the images of standard stars in different filters.
K. Rieznik, V. Reshetnyk
openalex   +2 more sources

Astroclimatic statistics at the Sayan Solar Observatory

Solar-Terrestrial Physics, 2020
The paper analyzes meteorological and optical characteristics of the atmosphere at the Sayan Solar Observatory (SSO) and the future 3 m Large Solar Telescope (LST-3).
Shikhovtsev A.Yu., Kovadlo P.G., Kiselev A.V.   +2 more
doaj   +1 more source

Superconducting Receivers for Space, Balloon, and Ground-Based Sub-Terahertz Radio Telescopes [PDF]

, 2020
We give a review of both our own original scientific results of the development of superconducting receivers for sub-terahertz astronomy and the main leading concepts of the global instrumentation.
Balega, Yu Yu, Baryshev, A. M., Bubnov, G. M., Chekushkin, A. M., Dmitriev, P. N., Dubrovich, V. K., Edelman, V. S., Filippenko, L., Gunbina, A. A., Haikin, V. B., Khudchenko, A., Koshelets, V. P., Lemzyakov, S. A., Nagirnaya, D., Rudakov, K., Smirnov, A., Tarasov, M. A., Vdovichev, S. N., Vdovin, V. F., Yakopov, G., Yusupov, R. A., Zinchenko, I. I.   +21 more
core   +1 more source