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520.82 --- Astronomical photometry --- Brightness (Astronomy) --- Photometry, Astronomical --- Photometry --- 520.82 Photometry --- Astronomical photometry. --- Photométrie astronomique. --- Pulsars --- Pulsars. --- X Rays --- Rayons X. --- Rayons X

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For those with access to even a modest telescope and CCD camera, this new and improved guide delivers all the information needed to take part in the scientific study of asteroids and variable stars. New techniques in photometry continue to be refined, and expert Brian Warner covers the developing territory in detail for those both new and experienced. Updated to reflect changes in telescope and CCD technology, it also includes an expanded chapter on the analysis of asteroid lightcurves to cover some of the common pitfalls that lead to incorrect answers as well as how to discover an asteroid satellite via lightcurves. With this information, amateur astronomers can use commercially available equipment to determine the rotation rate, size, and shape of asteroids. Similarly, it is possible to discover the size, temperature, and orbits of stars in binary systems by using this powerful technique. Brian Warner yet again delivers all the material needed for readers to understand the theory, and avoid the practical pitfalls of lightcurve photometry. Detailed examples are given for obtaining data, and of course for the exciting and rewarding task of analyzing the data to determine the physical properties of the objects. It also includes many detailed finder charts with magnitudes for reference and detailed steps on how to go about gathering data for specific projects without misinterpretation. Any college student or amateur astronomer who wants to go beyond mere imaging with a CCD camera and enter the challenging world of "real science" via the lightcurves of asteroids and binary stars will find everything necessary in this updated book. .

Popular works. --- Photography. --- Observations, Astronomical. --- Astronomy --- Optics. --- Optoelectronics. --- Plasmons (Physics). --- Astronomy. --- Popular Science. --- Popular Science in Astronomy. --- Astronomy, Observations and Techniques. --- Optics, Optoelectronics, Plasmonics and Optical Devices. --- Observations. --- Astronomical photometry. --- Brightness (Astronomy) --- Photometry, Astronomical --- Photometry --- Optics, Lasers, Photonics, Optical Devices. --- Astronomy—Observations. --- Lasers. --- Photonics. --- New optics --- Optics --- Light amplification by stimulated emission of radiation --- Masers, Optical --- Optical masers --- Light amplifiers --- Light sources --- Optoelectronic devices --- Nonlinear optics --- Optical parametric oscillators --- Astronomical observations --- Observations, Astronomical

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For those with access to even a modest telescope and CCD camera, this new and improved guide delivers all the information needed to take part in the scientific study of asteroids and variable stars. New techniques in photometry continue to be refined, and expert Brian Warner covers the developing territory in detail for those both new and experienced. Updated to reflect changes in telescope and CCD technology, it also includes an expanded chapter on the analysis of asteroid lightcurves to cover some of the common pitfalls that lead to incorrect answers as well as how to discover an asteroid satellite via lightcurves. With this information, amateur astronomers can use commercially available equipment to determine the rotation rate, size, and shape of asteroids. Similarly, it is possible to discover the size, temperature, and orbits of stars in binary systems by using this powerful technique. Brian Warner yet again delivers all the material needed for readers to understand the theory, and avoid the practical pitfalls of lightcurve photometry. Detailed examples are given for obtaining data, and of course for the exciting and rewarding task of analyzing the data to determine the physical properties of the objects. It also includes many detailed finder charts with magnitudes for reference and detailed steps on how to go about gathering data for specific projects without misinterpretation. Any college student or amateur astronomer who wants to go beyond mere imaging with a CCD camera and enter the challenging world of "real science" via the lightcurves of asteroids and binary stars will find everything necessary in this updated book. .

Science --- Space research --- Astronomy --- Plasma physics --- Optics. Quantum optics --- Pure sciences. Natural sciences --- Electronics --- Photography --- Linguistics --- plasma --- popularisering wetenschap --- populaire cultuur --- wetenschap --- fotografie --- elektrodynamica --- ruimte (astronomie) --- astronomie --- opto-elektronica --- optica

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HIS History & Biographies --- Cape --- South Africa --- biographies --- botanists --- coloured illustrations --- expeditions --- history --- history and biographies --- portraits

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Explore Twisted, the Python-based event-driven networking engine, and review several of its most popular application projects. It is written by community leaders who have contributed to many of the projects covered, and share their hard-won insights and experience. Expert Twisted starts with an introduction to event-driven programming, explaining it in the context of what makes Twisted unique. It shows how Twisted's design emphasizes testability as a solution to common challenges of reliability, debugging, and start-to-finish causality that are inherent in event-driven programming. It also explains asynchronous programming, and the importance of functions, deferreds, and coroutines. It then uses two popular applications, treq and klein, to demonstrate calling and writing Web APIs with Twisted. The second part of the book dives into Twisted projects, in each case explaining how the project fits into the Twisted ecosystem and what it does, and offers several examples to bring readers up to speed, with pointers to additional resources for more depth. Examples include using Twisted with Docker, as a WSGI container, for file sharing, and more.

Python (Computer program language) --- Computer programming. --- Python (Computer program language). --- Computer science. --- Python. --- Programming Languages, Compilers, Interpreters. --- Informatics --- Science --- Scripting languages (Computer science) --- Programming languages (Electronic computers). --- Computer languages --- Computer program languages --- Computer programming languages --- Machine language --- Electronic data processing --- Languages, Artificial