An Anthology of Visual Double Stars - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook An Anthology of Visual Double Stars write by Bob Argyle. This book was released on 2019-08-29. An Anthology of Visual Double Stars available in PDF, EPUB and Kindle. Modern telescopes of even modest aperture can show thousands of double stars. Many are faint and unremarkable but hundreds are worth searching out. Veteran double-star observer Bob Argyle and his co-authors take a close-up look at their selection of 175 of the night sky's most interesting double and multiple stars. The history of each system is laid out from the original discovery to what we know at the present time about the stars. Wide-field finder charts are presented for each system along with plots of the apparent orbits and predicted future positions for the orbital systems. Recent measurements of each system are included which will help you to decide whether they can be seen in your telescope, as well as giving advice on the aperture needed. Double star observers of all levels of experience will treasure the level of detail in this guide to these jewels of the night sky.
Observing Visual Double Stars
Observing Visual Double Stars - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Observing Visual Double Stars write by Paul Couteau. This book was released on 1981. Observing Visual Double Stars available in PDF, EPUB and Kindle. "Observing Visual Double Stars, " written by an astronomer who has discovered almost 2,000 of them, opens the way to amateur astronomers who wish to make a direct and real contribution to science through their avocation.Double or binary stars--pairs of stars that revolve around one another--were once thought to be rare, anomalies among the vast number of normal, isolated stars, like our sun. Now, however, it is believed that many if not "most" stars are mated in binary systems. The visual binaries are those whose component stars are rather distant from each other and require decades or even centuries to complete their orbits. Few professional astronomers devote their time to making the observations needed, over these extended periods, to determine the characteristics of even a small sample of these systems. Thus, if any sizable number of double stars are to be closely scrutinized, their periodic variations plotted, and their orbits and masses calculated, the host of amateur astronomers will have to come to the aid of the professionals by making patient, systematic, night-after-night, year-after-year recorded observations."Observing Visual Double Stars" is designed to train amateurs to become such lookouts. After a historical account of the discovery of binaries (from the sighting of the first in 1650, through the work of the Herschels and the Struves in the eighteenth and nineteenth centuries, to the present), the author describes the various classes of telescopes and other instruments and the relevant optical principles. This is followed by practical advice on how to use this apparatus to identify double stars and measure their variations over time.The heart of the book--and its technically most advanced section--presents the mathematical techniques that will allow the observer to calculate orbits and masses from the variables that have been measured. A chapter entitled "Voyage to the Country of Double Stars" describes a binary system as it might appear to an observer within it. The book also explains the use of star catalogues and presents its own catalogue of 744 double stars accessible to the amateur observer.
Understanding Variable Stars
Understanding Variable Stars - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Understanding Variable Stars write by John R. Percy. This book was released on 2007-05-24. Understanding Variable Stars available in PDF, EPUB and Kindle. This book was first published in 2007. Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or eclipse by a companion star, or physical processes such as vibration, flares, or cataclysmic explosions. In each case, variable stars provide unique information about the properties of stars, and the processes that go on within them. This book provides a concise overview of variable stars, including a historical perspective, an introduction to stars in general, the techniques for discovering and studying variable stars, and a description of the main types of variable stars. It ends with short reflections about the connection between the study of variable stars, and research, education, amateur astronomy, and public interest in astronomy. This book is intended for anyone with some background knowledge of astronomy, but is especially suitable for undergraduate students and experienced amateur astronomers who can contribute to our understanding of these important stars.
Observing and Measuring Visual Double Stars
Observing and Measuring Visual Double Stars - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Observing and Measuring Visual Double Stars write by Robert W. Argyle. This book was released on 2004-01-09. Observing and Measuring Visual Double Stars available in PDF, EPUB and Kindle. From the reviews: "I recommend it to anyone with an interest in binary stars who wants to learn more about these fascinating objects." (Jocelyn Tomkin, The Observatory, April 2005)
Intertitles
Intertitles - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Intertitles write by Jess Chandler. This book was released on 2021. Intertitles available in PDF, EPUB and Kindle. Intertitles is an anthology of work situated at the intersection of writing and the visual arts. The anthology aims to explore their confluence and is conceived in response to a twofold observation: the increased presence of written, spoken and performed language in the work of visual artists and the simultaneous increase in visibility and circulation of the work and voices of writers in the visual arts arena. Bringing together a substantial and significant collection of work, the anthology recognises that both writers and artists are attracted to the possibilities of language as a material. Through essays, performance texts, scores, poetry and more, Intertitles plots a course through contemporary writing practices and lends perspective to the question of why this might be of particular interest at this moment in time. In art as in poetry, meaning is made in the very conditions of the encounter itself. The knowledge produced is not instructive or strictly informational but subjective and relational. Artists build the worlds that viewers may inhabit temporarily in the moment of their becoming. The physicality of these temporary utopias, however, is frequently realised in the contested spaces of our museums and galleries. This anthology asks if poetry, and the world it is capable of building outside of these normative structures, is poised to be the most constitutive form of all. Putting poetry into the social milieu, as a shared goal of artists and writers, might be understood as a gesture towards a truly radical reimagining.
