Results 11 to 20 of about 200,926 (234)
Bayesian methods of astronomical source extraction [PDF]
The Astrophysical Journal, 2007 We present two new source extraction methods, based on Bayesian model selection and using the Bayesian Information Criterion (BIC). The first is a source detection filter, able to simultaneously detect point sources and estimate the image background. The
Pilbratt G. L. +3 more
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Scaled Gradient Projection Methods for Astronomical Imaging [PDF]
EAS Publications Series, 2020 This book is a collection of 19 articles which reflect the courses given at the Collège de France/Summer school “Reconstruction d'images − Applications astrophysiques“ held in Nice and Fréjus, France, from June 18 to 22, 2012. The articles presented in this volume address emerging concepts and methods that are useful in the complex process of improving
M. Bertero +3 more
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Astronomical Optical Interferometry. I. Methods and Instrumentation [PDF]
Serbian Astronomical Journal, 2010 Previous decade has seen an achievement of large interferometricprojects including 8-10m telescopes and 100m class baselines. Modern computerand control technology has enabled the interferometric combination of lightfrom separate telescopes also in the ...
Jankov, S.
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Comparative Methods for Teaching an Astronomical Topic [PDF]
International Astronomical Union Colloquium, 1990 Astronomy has greatly progressed in this decade. The number of people who are interested in astronomical phenomena is certainly increasing as the number of IAU members increases. These people are divided into several categories, depending on their degrees of interests.
Syuzo Isobe
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Point Spread Functions in Identification of Astronomical Objects from Poisson Noised Image [PDF]
Radioengineering, 2016 This article deals with modeling of astronomical objects, which is one of the most fundamental topics in astronomical science. Introduction part is focused on problem description and used methods.
F. Mojzis, J. Kukal, J. Svihlik
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Astronomical observatory site selection using fuzzy AHP and BWM methods [PDF]
Serbian Astronomical Journal, 2023 Establishing an observatory often involves complex decisions, such as choosing a site based on multiple conflicting criteria. In this study, we develop a multi-criteria decision analysis process by combining Geographic Information System (GIS) analysis ...
Yılmaz A.
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Methods of Astronomical Navigation [PDF]
Journal of Navigation, 1955 I think the Institute is doing a grand job in this matter of getting to the bottom of what actually happens at sea. I give a personal ‘shabash’ to D. H. Sadler & Co. for the new Abridged Nautical Almanac, and to S. M. Burton for the first-ever really practical manual and tables, but I am now completely ‘sold’ on H.D.
J. M. Bratton
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Comparison of density estimation methods for astronomical datasets [PDF]
Astronomy & Astrophysics, 2011 Context. Galaxies are strongly influenced by their environment. Quantifying the galaxy density is a difficult but critical step in studying the properties of galaxies.Aims. We aim to determine differences in density estimation methods and their applicability in astronomical problems.
Bilkis Jamal Ferdosi +4 more
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Plasma Diagnostics in the Era of Integral Field Spectroscopy
Galaxies, 2022 To understand the physical conditions of various gaseous systems, plasma diagnostics must be performed properly. To that end, it is equally important to have extinction correction performed properly, even before performing plasma diagnostics.
Toshiya Ueta
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Reconstruction of ancient Egyptian sundials [PDF]
Archaeoastronomy and Ancient Technologies, 2014 The article presents the results of a study of the design features of vertical and L-shaped ancient Egyptian sundials, developed their models, on the basis of which the reconstruction of the sundial was carried out.
Vodolazhskaya, L.N.
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