Results 131 to 140 of about 8,852 (164)
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Astronomical methods and calculations
The Physics Teacher, 1987Agnes Acker +2 more
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Rate of Change Methods in Astronomical Surveying
Journal of the Surveying and Mapping Division, 1980A method is described whereby longitude, latitude and azimuth can be obtained by taking sights on the sun at short timed intervals. Both rate of change of altitude with time and rate of change of bearing with altitude can be used to calculate the observer’s position and the direction of the meridian.
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Design method of an astronomical telescope with reduced sensitivity to misalignment
Applied Optics, 1994Approximate formulas are derived for the axial coma resulting from tilt and decenter of a surface and for the spherical aberration resulting from a change in its axial position. These expressions include terms that represent aberrations induced by the subsystem preceding the surface in addition to other terms that are intrinsic contributions from the ...
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An Iteration Method for Astronomical Image Deconvolution and Reconstruction
Research in Astronomy and AstrophysicsAbstract Imaging is an important method for astronomy research. In practice, original images acquired by a telescope are often convolved and blurred by the point-spread function (PSF), which is a very unfavorable situation for many scientific studies including astronomy.
F. Sine, M. Lu, L. Zhang
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Methods for astronomical image restoration
Procedings of The XXXVIII Iberian Latin American Congress on Computational Methods in Engineering, 2017Ana Paula Abranches de Castro e Shiguemori +7 more
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Lenghu on the Tibetan Plateau as an astronomical observing site
Nature, 2021Chunguang Zhang +2 more
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Astronomical time scale of the Turonian constrained by multiple paleoclimate proxies
Geoscience Frontiers, 2020Mingsong Li
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