Radio telescopes as well as communication antennas operate under the influence of gravity, temperature and wind. Among those, temperature influences may degrade the performance of a radio telescope through transient changes of the focus, pointing, path length and sensitivity, often in an unpredictable way. Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures reviews the design and construction principles of radio telescopes in view of thermal aspects and heat transfer with the variable thermal environment; it explains supporting thermal model calculations and the application and efficiency of thermal protection and temperature control; it presents many measurements illustrating the thermal behaviour of telescopes in the environment of their observatory sites.

The book benefits scientists and radio/communication engineers, telescope designers and construction firms as well as telescope operators, observatory staff, but also the observing astronomer who is directly confronted with the thermal behaviour of a telescope.

Remembrance of Things Past It scarcely seems credible that it was almost exactly thirty years ago that I ?rst met Duccio Macchetto at the ?rst meeting of the newly formed Science Working Group of what was then called the Space Telescope project. We were there in slightly d- ferent roles, Duccio as the project scientist for the Faint Object Camera and I as an interdisciplinary scientist. Henk van de Hulst was also there as the of?cial rep- sentative of ESO. The approval of the project was the end result of a great deal of lobbying and politicking both in the USA and Europe, the European contribution proving essential to the approval process in the USA. Those interested in the nit- gritty of the process should read Robert Smith's outstanding history of the Hubble Space Telescope. We should have realized early on that we were in for a rough time. At that ?rst meeting of the Science Working Group I remember vividly NASA Headquarters telling us that the Space Telescope was a success-oriented programme that would cost M$ 680. Well, we could live with the cost-tag, but we should have had concerns about the expression "success-oriented." This meant that everything should turn out exactly as planned, the project would be carried out within the projected time-scale and budget and the telescope would be launched in 1983. Well, the rest is history. We learned a lot of useful jargon along the way.

This second edition has been entirely restructured and almost doubled in size, in order to improve clarity and account for the great progress achieved in the field over the last 15 years.
"This is not a handbook for observers. It is a broader reference for students, active researchers, and anyone who wants a detailed look at the tools of modern astronomy..." -PHYSICS TODAY

Three eminent scientists, each well known for the clarity of their writing, present for students and researchers what is known about the internal structure, origin and evolution of White Dwarfs, Neutron Stars and Black Holes, all objects at the final stage of stellar evolution. They cover fascinating topics such as pulsation of white dwarfs, millisecond pulsars or the dynamics around black holes. The book is written for graduate students in astrophysics, but is also of interest to professional astronomers and physicists.

The Casual Sky Observer's Pocket Guide offers an observing program for occasional amateur observers looking for some quick, fun astronomy adventures under the stars. In the real world, where time for observing is limited, the weather is seldom perfect, and expensive equipment is not an option, amateur astronomy may not be seen as a worthwhile activity. However, portable and quick-to-set-up instruments are available. A pair of binoculars or a small telescope fills the bill. And the way to make the most of these instruments is described in the Casual Sky Observer's Pocket Guide. Not only does the book feature the best and brightest showpieces of the heavens; it also provides a great deal of physical and environmental data as well as lots of fascinating information and beautiful illustrations that provide a unique perspective on the many treasures within and beyond our home galaxy, the Milky Way - stars, star clusters, other galaxies, and nebulae, all within reach of binoculars or a small telescope.

Gravitational waves were predicted 100 years ago by Einstein as part of his general theory of relativity. This volume contains the exciting results presented at IAU Symposium 338, following the announcement of the first results of the observation of the collision of neutron stars by the LIGO and Virgo Advanced detectors, and follow-up observations by many ground-based and space telescopes. These observations provided an incredible context for the talks, posters and discussions at the meeting, fostering new interactions and collaborations between physicists and astronomers in an exciting new era of multimessenger astrophysics. For the first time, space-time messengers (gravitational waves) and electromagnetic ones (visible, infrared and ultraviolet light, x-rays, gamma-rays, radio waves) can be correlated, to increase our understanding of binary systems of compact objects, rotating or exploding stars and other astrophysical phenomena. A new window has opened through which we can view the cosmos.

In 1609 Galileo first used his telescope to kickstart the science of observational astronomy - an event that proved to be of enormous historic, scientific, and cultural importance. Galileo and 400 Years of Telescopic Astronomy will feature the life and achievements of Galileo, around which has pivoted the story of four centuries of telescopic astronomy. The book will detail how astronomy has progressed through four centuries and contain glimpses of future space research and astronomy goals. Uniquely, interwoven with the text will be a range of practical projects for backyard astronomers in which to participate, projects that serve to illustrate many of Galileo's scientific discoveries. The year 2009 not only marks the 400th anniversary of Galileo's initial telescopic discoveries, but it has also been chosen as the International Year of Astronomy, perfect timing for the reader to see for him or herself the way Galileo worked and thought.

Of all the many things we can look at in the night sky, the Moon is one of the richest in its ever-changing detail, as changes in light and shadow daily transform what you can see of every feature. Whether you use binoculars, a small telescope or a large one, you will find the Moon offers new horizons rich in exploration opportunities.

Moonwalk with Your Eyes guides the reader quickly through lunar basics: how to determine the lunar day and what lunar terminology you might encounter here and in other books. From there you ll be taken on a guided visual journey that encompasses what can be seen at any given time for all levels of observers.

Moonwalk with Your Eyes features high-quality annotated photographs and solid background information to help the reader understand many lunar phenomena. Here is a guide that allows those who simply gaze at the Moon to find a deeper appreciation of it; for those who use binoculars and small telescopes, this is a comprehensive guide to identifying what can be seen; and advanced observers will be challenged with a rare quality look at areas of the Moon that are not covered by other lunar guide books."

Simultaneously storing both spectral and spatial information, 3D spectroscopy offers a new way to tackle astrophysical problems, and opens up new lines of research. Since its inception in the eighties and early nineties, research in this field has grown enormously. Large telescopes all around the world are now equipped with integral field units, and two instruments of the future James Webb Space Telescope will have integral field spectroscopic capabilities. Nowadays, more effort is dedicated to refining techniques for reducing, analyzing and interpreting the data obtained with 3D spectrographs. Containing lectures from the seventeenth Winter School of the Canary Islands Astrophysics Institute, this book explores new 3D spectroscopy techniques and data. A broad and balanced presentation of research in this field, it introduces astronomers to a new generation of instruments, widening the appeal of integral field spectroscopy and helping it become a powerful tool in tackling astrophysical problems.

The genesis of modern searches for observable meteoritic phenomena on the Moon is the paper by Lincoln La Paz in Popular Astronomy magazine in 1938. In it he argued that the absence of observed fashes of meteoritic impacts on the Moon might be interpreted to mean that these bodies are destroyed as luminous meteors in an extremely rarefed lunar atmosphere. The paper suggested the possibility of systematic searches for such possible lunar meteors. With these concepts in mind, I was surprised to note a transient moving bright speck on the Moon on July 10, 1941. It appeared to behave very much as a lunar meteor would - except that the poorly estimated duration would lead to a strongly hyperbolic heliocentric velocity. Thus, the idea of systematic searches for both p- sible lunar meteors and meteoritic impact fashes was born. It was appreciated that much time might need to be expended to achieve any positive results. Systematic searches were carried out by others and myself chiefy in the years 1945-1965 and became a regular program at the newly founded Association of Lunar and Planetary Observers, or ALPO.

This book brings the challenge and fun back to a hobby that goes stale far too quickly for many budding amateur astronomers. The book begins with teaching astronomers to use their most important astronomy tool, their eyes. It discusses how to select the right telescope, and subsequent chapters take the readers on a tour of the solar system as they have never viewed it before... through their own eyes. Each chapter includes a series of observing challenges that will entertain and push the reader to continually higher levels of achievement.

My Heavens! charts the progress of the authora (TM)s own substantial observatory (with additional material from amateur constructors of large observatories elsewhere) from conception, through design, planning and construction, to using an observatory of the kind that all amateur astronomers would aspire to own.

This book tells the a oewarts and alla story of small beginnings in amateur astronomy, leading to the construction of a a oetop of the rangea observatory at a house on the edge of a country village between Oxford and London. The author is a qualified building surveyor, and looks at building the observatory from his own professional perspective. There were of course many errors, problems, technical and organizational difficulties along the way, and the author never shies away from admitting his mistakes a" and in doing so he reduces the chances of others falling into the same traps. Comparisons are made with similar large projects in the USA, taking a look at the differences and similarities in planning and building regulations, and in construction methods on both sides of the Atlantic.

Eventually an observatory materialized, set up to facilitate the taking of very high quality images of the deep sky on those special days of best seeing.

The story doesna (TM)t end with the construction of the observatory, but goes on to describe the authora (TM)s choice of equipment, setting it up, and his own techniques for obtaining superb astronomical images like the ones he shows in his book.

As one of the oldest scientific institutions in the United States, the US Naval Observatory has a rich and colourful history. This volume is, first and foremost, a story of the relations between space, time and navigation, from the rise of the chronometer in the United States to the Global Positioning System of satellites, for which the Naval Observatory provides the time to a billionth of a second per day. It is a story of the history of technology, in the form of telescopes, lenses, detectors, calculators, clocks and computers over 170 years. It describes how one scientific institution under government and military patronage has contributed, through all the vagaries of history, to almost two centuries of unparalleled progress in astronomy. Sky and Ocean Joined will appeal to historians of science, technology, scientific institutions and American science, as well as astronomers, meteorologists and physicists.

Spectropolarimetry embraces the most complete and detailed measurement and analysis of light, as well as its interaction with matter. This book provides an introductory overview of the area, which plays an increasingly important role in modern solar observations. Chapters include a comprehensive description of the polarization state of polychromatic light and its measurement, an overview of astronomical (solar) polarimetry, the radiative transfer equation for polarized light, and the formation of spectral lines in the presence of a magnetic field. Most topics are dealt with within the realm of classical physics, although a small amount of quantum mechanics is introduced where necessary. This text will be a valuable reference for graduates and researchers in astrophysics, solar physics and optics.

Astrophysics is facing challenging aims such as deep cosmology at redshift higher than 10 to constrain cosmology models, or the detection of exoplanets, and possibly terrestrial exoplanets, and several others. It requires unprecedented ambitious R&D programs, which have definitely to rely on a tight cooperation between astrophysics and optics communities. The book addresses most of the most critical interdisciplinary domains where they interact, or where they will do. A first need is to collect more light, i.e. telescopes still larger than the current 8-10 meter class ones. Decametric, and even hectometric, optical (from UV to IR wavelengths) telescopes are being studied. Whereas up to now the light collecting surface of new telescopes was approximately 4 times that of the previous generation, now this factor is growing to 10 to 100. This quantum leap urges to implement new methods or technologies developed in the optics community, both in academic labs and in the industry. Given the astrophysical goals and technological constraints, new generation adaptive optics with a huge number of actuators and laser guide stars devices have to be developed, from theoretical bases to experimental works. Two other newcomers in observational astrophysics are interferometric arrays of optical telescopes and gravitational wave detectors. Up-to-date reviews of detectors and of spectrographs are given, as well as forefront R&D in the field of optical coatings and of guided optics. Possible new ways to handle photons are also addressed, based on quantum physics. More and more signal processing algorithms are a part and parcel of any modern instrumentation. Thus finally the book gives two reviews about wavefront processing and about image restoration and deconvolution algorithms for ill conditioned cases.

Commercially-made astronomical telescopes are better and less expensive than ever before, and their optical and mechanical performance can be superb. When a good-quality telescope fails to perform as well as it might, the reason is quite probably that it needs a little care and attention! Here is a complete guide for anyone who wants to understand more than just the basics of astronomical telescopes and accessories, and how to maintain them in the peak of condition. The latest on safely adjusting, cleaning, and maintaining your equipment is combined with thoroughly updated methods from the old masters. Here, too, are details of choosing new and used optics and accessories, along with enhancements you can make to extend their versatility and useful lifetime. This book is for you. Really. Looking after an astronomical telescope isna (TM)t only for the experts - although there are some things that only an expert should attempt - and every serious amateur astronomer will find invaluable information here, gleaned from Barlow Pepin's many yearsa (TM) experience working with optical instruments.

Here is a one-volume guide to just about everything computer-related for amateur astronomers

Today's amateur astronomy is inextricably linked to personal computers. Computer-controlled "go-to" telescopes are inexpensive. CCD and webcam imaging make intensive use of the technology for capturing and processing images. Planetarium software provides information and an easy interface for telescopes. The Internet offers links to other astronomers, information, and software. The list goes on and on.

Find out here how to choose the best planetarium program: are commercial versions really better than freeware? Learn how to optimise a go-to telescope, or connect it to a lap-top. Discover how to choose the best webcam and use it with your telescope. Create a mosaic of the Moon, or high-resolution images of the planets...

Astronomy with a Home Computer is designed for every amateur astronomer who owns a home computer, whether it is running Microsoft Windows, Mac O/S or Linux. It doesn't matter what kind of telescope you own either - a small refractor is just as useful as a big "go-to" SCT for most of the projects in this book.

Radiation from astronomical objects generally shows some degree of polarization. Although this polarized radiation is usually only a small fraction of the total radiation, it often carries a wealth of information on the physical state and geometry of the emitting object and intervening material. Measurement of this polarized radiation is central to much modern astrophysical research. This handy volume provides a clear, comprehensive and concise introduction to astronomical polarimetry at all wavelengths. Starting from first principles and a simple physical picture of polarized radiation, the reader is introduced to all the key topics, including Stokes parameters, applications of polarimetry in astronomy, polarization algebra, polarization errors and calibration methods, and a selection of instruments (from radio to X-ray). The book is rounded off with a number of useful case studies, a collection of exercises, an extensive list of further reading and an informative index. This review of all aspects of astronomical polarization provides both an essential introduction for graduate students, and a valuable reference for practising astronomers.

This useful resource deals with satellite orbits, showing how the wide range of available orbits can be used in communications, positioning, remote-sensing, meteorology, and astronomy. An accompanying CD-ROM determines the orbit and sampling of a satellite.

A masterly survey of the last 13 years of Very Long Baseline Interferometry, reviewed in light of the most advanced astronomical observations. Topics covered include: Nonthermal emission from extragalactic radio sources; Principles of synchrotron emission in relation to astrophysics; Theory of relativistic jets; Young, powerful radio sources and their evolution; Scintillation in extragalactic radio sources; Radio and optical interferometry; Radio polarimetry; Unified schemes; Deep fields; Tropospheric and ionospheric phase calibration; Supernovae; VLBI for geodesy and geodynamics.

Astrometry encompasses all that is necessary to measure the positions and motions of celestial bodies: observational techniques, instrumentation, processing and analysis of observational data, and reference systems and frames, as well as the resulting astronomical phenomena. It is fundamental to all other fields of astronomy, from the focusing of telescopes to navigation and guidance systems and distance and motion determinations for astrophysics. Starting from basic principles, this work provides the principles of astrometry at milli- and micro-arcsecond accuracies and will be an invaluable reference for graduate students and research astronomers.

A Practical Astronomer's Deep-sky Companion is an essential read for deep-sky observers, whether they are interested in imaging or just sightseeing. This beautiful large-format full-colour book is designed to be taken out into the field during observing to provide all the information necessary for finding and imaging interesting deep-sky objects. There is a vast amount of information packed into each spread - photographs, position, maps, recommended exposure times, and much, much more. Every amateur astronomer will want a copy of this! -The only book to provide all the observational information needed for field use by deep-sky observers! -Large-format, full-colour spreads for ease of use. -Images as well as data for all the most interesting deep-sky objects. -Finder maps for all objects. -Recommended exposure times for imaging. -Organised by constellation.

This could be the first dictionary of astronomy specifically written for practical amateur astronomers. In addition to definitions, it provides an invaluable reference source for terms, techniques, instruments, formulas and processes for practising observers, both amateur and professional. A special feature of this dictionary is extended definitions for many topics; they give sufficient information for many of the techniques and items of instrumentation to be used as well as understood. With over 200 illustrations and extensive appendices, this is an essential reference book for every astronomer.

Spectropolarimetry embraces the most complete and detailed measurement and analysis of light, as well as its interaction with matter. This book provides an introductory overview of the subject because it is playing an increasingly important role in modern solar observations. Chapters include a comprehensive description of the polarization state of polychromatic light and its measurement; an overview of astronomical polarimetry; and the formation of spectral lines in the presence of a magnetic field. The text is a valuable reference for graduates and researchers in astrophysics, solar physics and optics.

Astronomy was a popular and important part of Victorian science, and British astronomers carried telescopes and spectroscopes to remote areas of India, the Great Plains of North America, and islands in the Caribbean and Pacific to watch the sun eclipsed by the moon. Examining the rich interplay between science, culture, and British imperial society in the late nineteenth century, this book shows how the organization and conduct of scientific fieldwork was structured by contemporary politics and culture, and how rapid and profound changes in the organization of science, advances in photography, and new printing technology remade the character of scientific observation.
After introducing the field of Victorian science to the nonspecialist, the book examines the long periods of planning necessary for eclipse expeditions, and it recounts the day-to-day work of getting to field sites, setting up camp, and preparing for and observing eclipses. Operating behind the countless decisions made by scientists was a host of large-scale forces, including the professionalization and specialization of disciplines, the growth of service, and public funding for the sciences. Fieldwork also required close coordination with the many institutions and technological systems of British imperialism.
The development of imaging technologies was, of course, crucial to observations of the solar corona. Eclipse observation taxed astronomers and their cameras to their limits, and it raised new questions about the trustworthiness of imaging technologies. In the late nineteenth century, scientists shifted from drawing to photographing natural phenomena, but the shift occurred gradually, unevenly, and against resistance. Victorian astronomers had to weigh carefully the merits of human and mechanical observation, and the difficulties of solar photography highlight the inseparability of images from technologies of observation and printing.