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Scaled Gradient Projection Methods for Astronomical Imaging [PDF]
EAS Publications Series, 2013 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.
doaj +4 more sources
Survey of Astronomical Image Processing Methods [PDF]
Lecture Notes in Computer Science, 2015 The image processing is becoming a key issue in astronomical data analysis. This paper introduces the algorithms and methods applied in astronomical image processing from different aspects. The paper first shows methods of lossless compression of astronomical images, like the pyramidal median transform, segment-based DPCM and 5/3 integer wavelet ...
Bo Qiu
exaly +3 more sources
Calibration method for the optical system of infrared CMOS-theodolite in astronomical measurement [PDF]
Scientific ReportsThe all-day astronomical measurement system, which integrates a theodolite with an infrared sensor, offers substantial advantages in miniaturization, automation, speed, measurement accuracy, and efficiency, enabling comprehensive all-day astronomical ...
Conghai Ruan +5 more
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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.
Ferdosi, B. J. +4 more
openaire +5 more sources
On the Segmentation of Astronomical Images via Level-Set Methods [PDF]
, 2019 Astronomical images are of crucial importance for astronomers since they contain a lot of information about celestial bodies that can not be directly accessible. Most of the information available for the analysis of these objects starts with sky explorations via telescopes and satellites.
Tozza S., Falcone M.
openaire +4 more sources
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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Six Maxims of Statistical Acumen for Astronomical Data Analysis [PDF]
The Astrophysical Journal Supplement SeriesThe acquisition of complex astronomical data is accelerating, especially with newer telescopes producing ever more large-scale surveys. The increased quantity, complexity, and variety of astronomical data demand a parallel increase in skill and ...
Hyungsuk Tak +6 more
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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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Dispersion Characteristics of the Multi-mode Fiber-fed VIPA Spectrograph
The Astronomical Journal, 2023 A high-resolution ( ${ \mathcal R }\gt {10}^{5}$ ), multi-mode fiber-fed spectrograph on large telescopes with a reasonable size is desirable in astronomy.
Xiaoming Zhu +4 more
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