Lately there have been more and more news stories on objects from space such as asteroids, comets, and meteors whizzing past Earth. One even exploded in the atmosphere over a Russian city in 2012, causing real damage and injuries. Impacts are not uncommon in our Solar System, even on Earth, and people are beginning to realize that we must prepare for such an event here on Earth.Incoming Asteroid - What Could We Do About It?, Author: Duncan Lunan What if we knew there was going to be an impact in 10 years time? What could we do? Its not so far in the future that we can ignore the threat, and not so soon that nothing could be done. The author and his colleagues set out to explore how they could turn aside a rock asteroid, one kilometer in diameter, within this 10-year timescale. Having set themselves this challenge, they identified the steps that might be taken, using technologies that are currently under development or proposed. They considered an unmanned mission, a follow-up manned mission, and a range of final options, along with ways to reduce the worst consequences for humanity if the impact cannot be prevented. With more warning, the techniques described could be adapted to deal with more severe threats. If successful, they can generate the capability for a much expanded human presence in space thereafter. With the dangers now beginning to be recognized internationally and with major new programs already in motion, the prospects for civilization and humanity, in relation to the danger of impacts, look much more hopeful than they did only a decade ago.

Guides observers to the best nebulous objects in the night sky from any latitude, including the incorporation of numerous Southern Hemisphere objects Authored by a recipient of the "Master Observer Award" of the Astronomical League, who is extremely familiar with the instrumentation needed to view and image nebulae as well as having a deep understanding of their properties Contains many stunning pictures illustrating the beautiful and multi-colored nebulae of the Milky Way Observing Nebulae This book enables anyone with suitable instruments to undertake an examination of nebulae and see or photograph them in detail. Nebulae, ethereal clouds of gas and dust, are among the most beautiful objects to view in the night sky. These star-forming regions are a common target for observers and photographers. Griffiths describes many of the brightest and best nebulae and includes some challenges for the more experienced observer. Readers learn the many interesting astrophysical properties of these clouds, which are an important subject of study in astronomy and astrobiology. Non-mathematical in approach, the text is easily accessible to anyone with an interest in the subject. A special feature is the inclusion of an observational guide to 70 objects personally observed or imaged by the author. The guide also includes photographs of each object for ease of identification along with their celestial coordinates, magnitudes and other pertinent information. Observing Nebulae provides a ready resource to allow anyone with a little experience in astronomy, whether professional or amateur, to locate, identify and record the nebulae in our home galaxy. The author enables the observer to use a telescope and filters to the best advantage to see these celestial wonders, or to couple filters to a CCD camera or digital SLR camera in order to take quality images of celestial objects. By using these techniques it is even possible to make a valid contribution to professional investigations. And the views are unbeatable.

The uniquely beautiful light display of an aurora is the result of charged particles colliding with tenuous atmospheric oxygen and nitrogen, more than 60 miles above the Earth, when the magnetosphere is disturbed by changes in the solar wind.Aurora - Observing and Recording Nature's Spectacular Light Show, Authors: Bone, Neil Often - and incorrectly - regarded as being confined to high northern and southern latitudes, major auroral displays are visible from even the southern USA and the south of England, and occur perhaps twenty times in each eleven-year sunspot cycle. Major auroral storms always cause great interest and excitement in the media, and of course provide practical astronomers with the opportunity to study and image them. This book describes the aurora from the amateur observational viewpoint, discusses professional studies of auroral and geomagnetic phenomena to put amateur work in context, and explains how practical observers can go about observing and recording auroral displays.

Provides a one-stop shop for the amateur variable star observer. Features chapters on binocular variable stars and photometric study of variable stars, topics that have not been addressed in most other amateur astronomy books. Uses non-mathematical language that is easily accessible to anyone with a general interest in astronomy. Provides basic and advanced information for an activity many amateur astronomers pursue once they have developed some skills in deep sky observing This book contains everything you need to know about variable stars -- stars whose brightness varies noticeably over time. The study of variable stars has been a particularly popular area of research for amateurs for many years; the material contained herein serves as both an introduction to amateur astronomers and a useful reference source for seasoned variable star observers.  With its thorough, non-mathematical descriptions of variable stars and tips for how to see them, this book enables novices and experts alike to set off into the field and observe a wide range of delightful sights. It strikes a balance between easily visible objects that can be seen in any telescope or binoculars, and variable stars that are a direct challenge to those with large aperture equipment or access to photometric tools and methods. After helping the observer differentiate between variable star types, the author goes on to explain the skills needed to operate a telescope and other equipment, as well as how to couple filters to a CCD camera or digital SLR camera in order to photometrically record these celestial objects. Further, the book includes an observational guide to 50 objects for study, with finder charts and data about light curves for ease of identification, along with the stars’ celestial coordinates, magnitudes, and other pertinent information.

En introduktion till solens historia.Solar History - An Introduction - Författare: Claudio Vita-Finzi Beyond the four centuries of sunspot observation and the five decades during which artificial satellites have monitored the Sun – that is to say for 99.99999% of the Sun's existence – our knowledge of solar history depends largely on analogy with kindred main sequence stars, on the outcome of various kinds of modelling, and on indirect measures of solar activity. They include the analysis of lunar rocks and meteorites for evidence of solar flares and other components of the solar cosmic-ray (SCR) flux, and the measurement of cosmogenic isotopes in wood, stratified ice and marine sediments to evaluate changes in the galactic cosmic-ray (GCR) flux and thus infer changes in the sheltering magnetic fields of the solar wind. In addition, shifts in the global atmospheric circulation which appear to result from cyclic fluctuations in solar irradiance have left their mark in river sediments and in the isotopic composition of cave deposits. In this volume the results these sources have already produced have been summarised, paying special attention to those that reflect processes in different parts of the Sun's interior and that display periodicities and trends which may enable us to forecast future large-scale environmental changes. Språk: Engelska

Every total solar eclipse sees cruise ships or coach convoys, and frequently both, conveying to thousands of observers the narrow umbral track, where they can witness this rare and beautiful astronomical event, weather permitting. But for each total solar eclipse you get just a few minutes (or seconds) to make the most of the spectacle, savor it visually, and record the event.Total Solar Eclipses and How to Observe Them, Authors: Mobberley, Martin * Describes the astronomy, science and physics of total solar eclipses, and the phenomena that can be observed only during a total eclipse. * Enables members of the growing community of eclipse chasers to ensure that they have with them all the right equipment to observe or image a total solar eclipse. * Describes what to expect during a total solar eclipse, in different conditions and in different locations. * Describes previous eclipse expeditions, including a look at the less serious side: eclipse expedition disasters. * Provides a checklist of where to go to see total solar eclipses for the next 15 years. Every total solar eclipse sees cruise ships or coach convoys, and frequently both, conveying to thousands of observers the narrow umbral track, where they can witness this rare and beautiful astronomical event, weather permitting. But for each total solar eclipse you get just a few minutes (or seconds) to make the most of the spectacle, savor it visually, and record the event. You have to get it right first time, which is where Total Solar Eclipses and How to Observe Them comes in. Here is all the information an eclipse chaser needs to ensure a trouble-free expedition. Martin Mobberley explains how to avoid equipment and set-up errors thousands of miles from home, advises on the right equipment to buy for observing and digital SLR imaging, and explains the crucial points to address when traveling abroad with astronomical equipment. The first part of the book contains a wealth of information about total solar eclipses themselves: how and why they happen, related physics of the Sun, the alignment geometries, and, of course, the astronomical features that can only be witnessed when our Moon precisely covers the solar disk.

* Mizon, a well-known expert on light pollution, offers insider advice on the best dark sky sites * Includes photographs of some of the best astrophotographers * Encourages amateur astronomers to travel to protected observing locations with practical tips for how to observe once they are there Finding a Million-Star Hotel, author: Mizon, Bob Bob Mizon, one of the world's best known campaigners against the veil of light pollution that has taken away the starry sky from most of the world's population, takes readers to a hundred places in the UK and the USA where the wonders of the night sky might still be enjoyed in perfect or near-perfect night skies. Visiting small hotels and simple campsites, and savoring vast dark-sky reserves where the night sky is actively protected, The Million-Star Hotel celebrates the black skies of yesteryear – which may become a reality for more and more of us as modern technology reins in lighting and puts it only where needed. How can you prepare for your stay beneath the stars? What astronomy can you do during the daytime? What kind of equipment will you need? Questions such as these are answered, and if town dwellers return inspired – and, Bob hopes, also inspired to look with fresh eyes at their own local lighting – there is enough information here for them to equip themselves for some urban astronomy too.

* Enables Northern Hemisphere readers to quickly determine the next celestial event they can see with the naked eye. * Guides readers through eight years of the sky's rhythms via a month-by-month almanac and annual overviews with each year's best events. * Helps seasoned observers such as eclipse chasers plan travel for events. Celestial Delights, Authors: Reddy, Francis Celestial Delights is the essential "TV Guide" for the sky. Through extensive graphics integrated with an eight-year-long calendar of sky events, it provides a look at "don't miss" sky events, mostly for naked-eye and binocular observing. It is organized by ease of observation lunar phases and the brighter planets come first, with solar eclipses, the aurora, and comets coming later. This third edition also includes a hefty dose of sky lore, astronomical history, and clear overviews of current science. It provides a handy reference to upcoming naked-eye events, with information broken out in clear and simple diagrams and tables that are cross-referenced against a detailed almanac for each year covered. This book puts a variety of information all in one place, presents it in a friendly way that does not require prior in-depth astronomical knowledge, and provides the context and historical background for understanding events that astronomy software or web sites lack.

A nontechnical, nonmathematical primer on amateur radio astronomy. Includes 4 new amateur projects, including bouncing a signal off the moon, detecting the aurora, ISS, and more. Offers expanded resources for the interested reader.

* Titel: Visually Observing Comets * Författare: David A. J. Seargent * Språk: Engelska * Utgiven: 2017 * Format: Häftad * ISBN: 9781316639931 * Includes suggestions for observing periodic comets in addition to finding new comets * Small trim size and to-the-point text make this ideal for use as an on-the-go-reference * Explains the possibilities for an amateur observer to make a significant contribution to planetary science through comet-spotting In these days of computers and CCD cameras, visual comet observers can still contribute scientifically useful data with the help of this handy reference for use in the field. Comets are one of the principal areas for productive pro-amateur collaboration in astronomy, but finding comets requires a different approach than the observing of more predictable targets. Principally directed toward amateur astronomers who prefer visual observing or who are interested in discovering a new comet or visually monitoring the behavior of known comets, it includes all the advice needed to thrive as a comet observer. After presenting a brief overview of the nature of comets and how we came to the modern understanding of comets, this book details the various types of observations that can usefully be carried out at the eyepiece of a telescope. Subjects range from how to search for new comets to visually estimating the brightness of comets and the length and orientation of tails, in addition to what to look for in comet heads and tails. Details are also given of 20 periodic comets, predicted to return between the years 2017 and 2027, that are expected to become suitable targets for visual observing, in addition to information on a famous comet potentially visible each year and subject to great outbursts of brightness.

Visualizes relevant physical information of stars and extended objects in an attractive and comprehensive way with different colors, symbol types, and sizes Covers the entire sky, both the Northern and Southern Hemisphere Contains position (and physical) information on enough stars to support star-hopping The Constellation Observing Atlas Designed for anyone who wishes to learn the constellations or observe the best and brightest deep sky objects and double stars, this book contains an alphabetical list of constellations complete with star maps, historical background, and highlights of deep sky objects. Each entry contains position and physical information on enough stars to support astronomers in star-hopping, swinging the telescope from star to star to star to arrive at a faint target. It provides a carefully selected list of accessible and rewarding deep sky objects. Full-color maps show the constellations, with star types (spectral and physical) indicated by the colors used on the map. Extended objects such as galaxies and nebulae are shown with the approximate apparent size in the sky. With unmatched thoroughness and accessibility, this is a constellation atlas that makes the ideal companion to a night's telescope viewing, for novices and expert amateur astronomers alike. Easy to navigate and refer to, it is the key that unlocks the door to greater night sky exploration.

This book is a unique work satisfying the need for a modern, comprehensive review of all major aspects of galaxy observation.Galaxies and How to Observe Them, Authors: Steinicke, Wolfgang, Jakiel, Richard The book combines the physical background on the nature and data of galaxies, the relevant instrumentation and viewing techniques, and finally the targets and their individual appearance in telescopes of various apertures. A comprehensive sample of galaxies, including quasars, groups and clusters of galaxies is presented. This combination of theoretical knowledge and practical information guarantees successful observing sessions. Furthermore, the book is clearly structured with outstanding images and graphics.

Nebulae are the places where the stars are born. For amateur astronomers, the many different kinds of nebulae vary from "easy" targets that can be seen with modest equipment under mediocre skies, to more obscure "challenging" objects that require experienced observers, more powerful telescopes and excellent observation conditions.Nebulae and How to Observe Them, Authors: Coe, Steven The concept of this book - and of the series - is to present an up-to-date detailed description and categorisation of nebulae, and then to instruct the reader in the best ways to successfully observe and record the large range of astronomical objects that fall under the general heading of "nebulae". Nebulae and How to Observe Them is a comprehensive mine of information for all levels of amateur observers, from the beginner to the experienced. The Astronomers Observing Guides are designed for practical amateur astronomers who not only want to observe, but want to know the details of exactly what they are looking at ASTRONOMERS OBSERVING GUIDES provide up-to-date information for amateur astronomers who want to know all about what it is they are observing. This is the basis of the first part of the book. The second part details observing techniques for practical astronomers, working with a range of different instruments. Steven Coe 1st Edition., 2007, X, 156 p. 128 illus., 11 in color.

Mercury and Venus - known as the "inferior planets" because they are closer to the Sun than the Earth is - have always been regarded as difficult and even dangerous targets for amateur astronomers.Venus and Mercury, and How to Observe Them, Authors: Grego, Peter Recent advances in commercially-made instruments have, however, brought them within range of only moderately experienced observers, and certainly Mercury and Venus are by no means inferior in terms of visual delights, observing challenges...and mystery. Venus and Mercury and How to Observe Them offers a wealth of detailed practical information on every aspect of observing, from safely targeting the two planets, through visual observing, to sketching and electronic imaging. This is of course much more than a book about observing. We now know a lot more of the origin and evolution of Mercury and Venus, and Peter Grego describes the most recent theories of their probable formation, geology, and history. Not only does this include a lot about the surface of the planets, but also their internal structure, magnetic fields, and atmospheres. Peter Grego 2008, XIV, 266 p. 80 illus., 30 in color.

If you're wanting a challenge for your newly acquired telescope, or are interested in seeing what others have highlighted as some of the greatest sights in the night sky, this book will set you on the path of discovery.The Caldwell Objects and How to Observe Them There have been only a handful of famous deep sky "catalogs," including Charles Messier's, which was the first and remains the most famous. Messier was a comet hunter, and in the late 1700s he published a list of 109 objects in the sky that were not comets. In December 1995, Sky & Telescope published a list of deep sky objects sent to them by British amateur astronomer extraordinare, Sir Patrick Moore (officially, Sir Patrick Caldwell-Moore). It was a huge hit! Sir Patrick may be the most prolific authors of astronomy books for all time and has been presenting the BBC Sky at Night television series since April 1957. Moore's list contained 109 non-Messier objects that were Patrick's favorites, many of them visible only in the southern hemisphere. Accompanying the list of objects were long exposure black and white and color photographs of some of these objects. In this book Martin Mobberley, who has known Sir Patrick Moore for many years, describes these objects and tells how to locate them. He discusses the best ways to visually observe them and image them. He also tells a little of Moore's life and observing practices and how he made his choices for the "catalog." If you're wanting a challenge for your newly acquired telescope, or are interested in seeing what others have highlighted as some of the greatest sights in the night sky, this book will set you on the path of discovery.

Jupiter is one of the most spectacular observing targets for amateur astronomers. There are various books about observing the planets, and several about Jupiter itself, but this is the only book to deal with the giant planet - its formation, structure, and incredible physics - as well as with the practical aspects of observation of the planet and its moons.Jupiter and how to observe it, Authors: McAnally, John W. The concept of the book - and of the series - is to present an up-to-date detailed physical and astrophysical description (part one) and then (part two) to consider how best to observe and image the giant planet. Jupiter and How to Observe It is a mine of information for all levels of amateur observers, from the beginning to the experienced, and will be fascinating reading for all practical amateur astronomers. 1st Edition., 2008, X, 218 p.