Results 11 to 20 of about 67,291 (258)
Night-time measurements of astronomical seeing at Dome A in Antarctica [PDF]
Nature, 2020 Seeing, the angular size of stellar images blurred by atmospheric turbulence, is a critical parameter used to assess the quality of astronomical sites. Median values at the best mid-latitude sites are generally in the range of 0.6--0.8\,arcsec. Sites on the Antarctic plateau are characterized by comparatively-weak turbulence in the free-atmosphere ...
Bin Ma +8 more
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Model for estimating the astronomical seeing at Dome A, Antarctica
Optics Express, 2021 A model for estimating astronomical seeing at Kunlun Station (Dome A, Antarctica) is proposed. This model is based on the Tatarskii equation, using the wind shear and temperature gradient as inputs, and a seeing model depending directly on the weather data is provided.
Qike Yang +7 more
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Astronomical seeing from the summits of the Antarctic plateau [PDF]
Astronomy & Astrophysics, 2002 From the South Pole, microthermal turbulence within a narrow surface boundary layer some 200m thick provides the dominant contribution to the astronomical seeing. We present results for the seeing at a wavelength of 2.4um. The narrow turbulence layer above the site, confined close to the surface, provides greatly superior conditions for adaptive optics
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Patterns of Astronomical Seeing at KSA SEM Observatory
Journal of the Korean earth science society, 2009 We report patterns of astronomical seeing at KSA SEMO (Korea Science Academy Space Earth and Man Observatory). Though the data of the seeing measured at the local observatory is essential in identifying the seeing of the observatory, systematic measurement of seeing has not been made in Pusan yet.
Im-Seok Kang, Kyung-Hoon Lee
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Lenghu on the Tibetan Plateau as an astronomical observing site. [PDF]
Nature, 2021 Deng L +13 more
europepmc +2 more sources
On the Impact of ENSO Cycles and Climate Change on Telescope Sites in Northern Chile
Atmosphere, 2023 The Atacama desert stands as the most arid, non-polar, region on Earth and has accommodated a considerable portion of the world’s ground-based astronomical observatories for an extended period.
Julia Victoria Seidel +2 more
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First day-time seeing observations at the Observatory of University of Zanjan in Iran [PDF]
Iranian Journal of Astronomy and Astrophysics, 2018 Recognition of the appropriate locations for ground-based observations of the Sun with high angular resolution depends on the factors such as seeing, meteorological and astronomical parameters.
Pardis Ahmadi +3 more
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Method for Measuring the Second-Order Moment of Atmospheric Turbulence
Atmosphere, 2021 The turbulence moment of order m (μm) is defined as the refractive index structure constant Cn2 integrated over the whole path z with path-weighting function zm. Optical effects of atmospheric turbulence are directly related to turbulence moments.
Hong Shen +3 more
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Excellent daytime seeing at Dome Fuji on the Antarctic plateau [PDF]
, 2013 Context. Dome Fuji, the second highest region on the Antarctic plateau, is expected to have some of the best astronomical seeing on Earth. However, site testing at Dome Fuji is still in its very early stages. Aims.
H. Motoyama +4 more
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THE PROBABILITY OF SEEING THE CRESCENT WITH THE NAKED EYE. [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2012 The aim of this study is to improve the static equation of the possibility of seeing the crescent. The factors (age of the moon, moon altitude, anomaly of the sun, the duration of stay Crescent (mukth)) for many years from (2004 to 2013 A.D) has been ...
BATOOL A. BENDER, MAJEED M. JARAD
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