Results 1 to 10 of about 67,172 (151)

Astronomical Seeing at Maidanak Observatory during the Year 2018 [PDF]

Galaxies, 2021
Results of a four-month campaign of astronomical seeing measurements at Maidanak astronomical observatory (MAO) are presented. A differential image motion monitor (DIMM) was used for seeing estimations during the period from August to November 2018.
Yusufjon Tillayev, Azimjon Azimov, Aktam Hafizov   +2 more
doaj   +3 more sources

UBVRI night sky brightness at Kottamia Astronomical Observatory [PDF]

Scientific Reports, 2023
Photoelectric observations of night sky brightness (NSB) at different zenith distances and azimuths, covering all the sky, at the Egyptian Kottamia Astronomical observatory (KAO) site of coordinates ϕ = 29° 55.9′ N and λ = 31° 49.5′ E, were done using a ...
Mohamed F. Aboushelib, A. B. Morcos, S. Nawar, O. M. Shalabiea, Z. Awad   +4 more
doaj   +2 more sources

Astronomical Seeing and Meteorological Parameters at Maidanak Observatory

Atmosphere, 2023
In this article, we present the results of astronomical seeing measurements conducted at the Maidanak observatory and the influence of meteorological parameters on astronomical seeing.
Yusufjon Tillayev, Azimjon Azimov, Shuhrat Ehgamberdiev, Sabit Ilyasov   +3 more
doaj   +2 more sources

Astronomical seeing and ground-layer turbulence in the Canadian High Arctic [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
We report results of a two-year campaign of measurements, during arctic winter darkness, of optical turbulence in the atmospheric boundary-layer above the Polar Environment Atmospheric Laboratory in northern Ellesmere Island (latitude +80 deg N).
Gagne, R., Hickson, P., Pfrommer, T., Steinbring, E.   +3 more
core   +2 more sources

Investigation of the Global Spatio-Temporal Characteristics of Astronomical Seeing

Remote Sensing, 2023
Astronomical seeing is important for monitoring the atmospheric environment, observation scheduling and management, and selecting astronomical sites.
Cuicui Bi, Chun Qing, Xianmei Qian, Tao Luo, Wenyue Zhu, Ningquan Weng   +5 more
doaj   +1 more source

Surface Layer Turbulence at the Maidanak Observatory

Atmosphere, 2023
Results of night-time surface layer turbulence measurements using ESO LuSci at the Maidanak observatory are presented. Turbulence in the surface layer was evaluated at the Maidanak observatory using LuSci during the period of 2021–2022.
Azimjon Azimov, Yusufjon Tillayev, Shuhrat Ehgamberdiev, Yodgor Rajabov, Sabit Ilyasov, Marc Sarazin   +5 more
doaj   +1 more source

Discovery of Calm Astronomical Sites Over the Antarctic Continent

The Astronomical Journal, 2023
A calm astronomical site means a site where astronomical observation would be less likely to be interfered with by optical turbulence. Previous turbulence measurements at a few sites in Antarctica have demonstrated very calm atmospheric conditions here ...
Qike Yang, Xiaoqing Wu, Chun Qing, Tao Luo, Xuebin Li, Shengcheng Cui, Pengfei Wu, Xianmei Qian, Zhiyuan Wang, Xiaodan Hu, Yiming Guo, Chong Yan, Zhi Qiao   +12 more
doaj   +1 more source

Estimation of Astronomical Seeing with Neural Networks at the Maidanak Observatory

Atmosphere, 2023
In the present article, we study the possibilities of machine learning for the estimation of seeing at the Maidanak Astronomical Observatory (38∘40′24″ N, 66∘53′47″ E) using only Era-5 reanalysis data.
Artem Y. Shikhovtsev, Alexander V. Kiselev, Pavel G. Kovadlo, Evgeniy A. Kopylov, Kirill E. Kirichenko, Shuhrat A. Ehgamberdiev, Yusufjon A. Tillayev   +6 more
doaj   +1 more source

Simulating Atmospheric Characteristics and Daytime Astronomical Seeing Using Weather Research and Forecasting Model

Applied Sciences, 2023
The present study is aimed at the development of a novel empirical base for application to ground-based astronomical telescopes. A Weather Research and Forecasting (WRF) model is used for description of atmospheric flow structure with a high spatial ...
A. Y. Shikhovtsev, P. G. Kovadlo, A. A. Lezhenin, V. S. Gradov, P. O. Zaiko, M. A. Khitrykau, K. E. Kirichenko, M. B. Driga, A. V. Kiselev, I. V. Russkikh, V. A. Obolkin, M. Yu. Shikhovtsev   +11 more
doaj   +1 more source

Neural Network Based Point Spread Function Deconvolution For Astronomical Applications

The Open Journal of Astrophysics, 2023
Optical astronomical images are strongly affected by the point spread function (PSF) of the optical system and the atmosphere (seeing) which blurs the observed image.
Hong Wang, Sreevarsha Sreejith, Yuewei Lin, Nesar Ramachandra, Anze Slosar, Shinjae Yoo   +5 more
doaj   +1 more source