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In this simple guide, David Levy inspires readers to experience the wonder of eclipses and other transient astronomical events for themselves. Covering both solar and lunar eclipses, he gives step-by-step instructions on how to observe and photograph eclipses. As well as explaining the science behind eclipses, the book also gives their historical background, discussing how they were observed in the past and what we have learned from them. This personal account contains examples from the 77 eclipses the author has witnessed himself. The guide also includes chapters on occultations of stars and planets by the Moon and of asteroids by stars, and the transits of Mercury and Venus. Tables of future eclipses make this invaluable for anyone, from beginners to practised observers, wanting to learn more about these fascinating events.

Eclipses. --- Transits. --- Occultations. --- Astronomy --- Spherical astronomy --- Eclipses --- Transits --- Occultations --- Technique.

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Much of what is known about the universe comes from the study of celestial shadows—eclipses, transits, and occultations. The most dramatic are total eclipses of the Sun, which constitute one of the most dramatic and awe-inspiring events of nature. Though once a source of consternation or dread, solar eclipses now lead thousands of amateur astronomers and eclipse-chasers to travel to remote points on the globe to savor their beauty and the adrenaline-rush of experiencing totality, and were long the only source of information about the hauntingly beautiful chromosphere and corona of the Sun. Long before Columbus, the curved shadow of the Earth on the Moon during a lunar eclipse revealed that we inhabit a round world. The rare and wonderful transits of Venus, which occur as it passes between the Earth and the Sun, inspired eighteenth century expeditions to measure the distance from the Earth to the Sun, while the recent transits of 2004 and 2012 were the most widely observed ever--and still produced results of great scientific value. Eclipses, transits and occultations involving the planets, their satellites, asteroids and stars have helped astronomers to work out the dimensions and shapes of celestial objects—even, in some cases, hitherto unsuspected rings or atmospheres—and now transits have become leading tools for discovering and analyzing planets orbiting other stars. This book is a richly illustrated account of these dramatic and instructive astronomica l phenomena. Westfall and Sheehan have produced a comprehensive study that includes historical details about past observations of celestial shadows, what we have learned from them, and how present-day observers—casual or serious—can get the most out of their own observations. .

Physics. --- Astronomy, Astrophysics and Cosmology. --- Popular Science in Astronomy. --- Planetology. --- Astronomy. --- Physique --- Planétologie --- Astronomie --- Eclipses. --- Lunar eclipses. --- Occultations. --- Eclipses --- Lunar eclipses --- Solar eclipses --- Transits --- Occultations --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Practical & Spherical Astronomy --- Astronomy - General --- Astrophysics --- Spherical astronomy --- Planetary sciences --- Planetology --- Astrophysics. --- Astronomical physics --- Astronomy --- Cosmic physics --- Physics

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For the experienced amateur astronomer who is wondering if there is something useful, valuable, and permanent that can be done with his or her observational skills, the answer is, "Yes, you can!" This is the book for the experienced amateur astronomer who is ready to take a new step in his or her astronomical journey. Unfortunately, there is no modern text that points curious amateur astronomers to the research possibilities that are open to them. At the 2006 meeting of the Society for Astronomical Sciences, quite a few participants agreed that the lack of such a text was a serious gap in the astronomical book market, and that this gap is impeding their efforts to encourage more amateur astronomers to get involved in research collaborations. This book will fill that gap, and enable more amateur astronomers to add research-type studies to their pursuit of the hobby. Written by an astronomer who is well known amongst the amateur and professional community for the skill and quality of his work, this book describes a wide range of research areas where amateurs are gathering new scientific data that is utilized by professional astronomers. For each research area, the book provides a concise explanation of the purpose and value of the amateurs’ observations, a description of the equipment that is needed, specific observing procedures, complete data reduction instructions, and an explanation of how, and where, to submit results so that they will be available to the professional users.

Astronomy --- Meteors --- Occultations. --- Experiments. --- Spherical astronomy --- Eclipses --- Transits --- Astronomical meteors --- Falling stars --- Fireballs (Meteors) --- Shooting stars (Meteors) --- Stars, Falling --- Stars, Shooting --- Near-Earth objects --- Astronomy. --- Popular Science in Astronomy. --- Astronomy, Astrophysics and Cosmology. --- Astronomy, Observations and Techniques. --- Astrophysics. --- Observations, Astronomical. --- Astronomy—Observations. --- Astronomical observations --- Observations, Astronomical --- Astronomical physics --- Cosmic physics --- Physics

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Since the early use of the occultation measurement principle for sounding pla- tary atmospheres and ionospheres, its exploitation in atmospheric remote sensing has seen tremendous advances. In this book we focus on sensors on Low Earth Orbit (LEO) satellites, which exploit solar, lunar, stellar, GNSS (Global Navi- tion Satellite Systems), and LEO-crosslink signals for observing the Earth's - mosphere and climate. The methods all share the key properties of self-calibration, high accuracy and vertical resolution, global coverage, and (if using radio signals) all-weather ca- bility. The atmospheric parameters obtained extend from the fundamental va- ables temperature, density, pressure and water vapor via trace gases, aerosols and cloud liquid water to ionospheric electron density. Occultation data are therefore of high value in a wide range of fields including climate monitoring and research, atmospheric physics and chemistry, operational meteorology, and ionospheric physics. nd The 2 International Workshop on Occultations for Probing Atmosphere and Climate – OPAC-2 – was held September 13–17, 2004, in Graz, Austria. OPAC-2 aimed at providing a casual forum and stimulating atmosphere fertilizing scientific discourse, co-operation initiatives, and mutual learning and support amongst members of all different occultation communities. The workshop was attended by 40 participants from 12 different countries who actively contributed to a scientific programme of high quality and to an excellent workshop atmosphere, which was judged by the participants to have fully met the aims expressed.

Occultations --- Climatic changes --- Spherical astronomy --- Eclipses --- Transits --- Physical geography. --- Astrophysics. --- Geophysics/Geodesy. --- Climatology. --- Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics). --- Astronomy, Observations and Techniques. --- Measurement Science and Instrumentation. --- Remote Sensing/Photogrammetry. --- Astronomical physics --- Astronomy --- Cosmic physics --- Physics --- Geography --- Geophysics. --- Space sciences. --- Observations, Astronomical. --- Astronomy—Observations. --- Physical measurements. --- Measurement   . --- Remote sensing. --- Remote-sensing imagery --- Remote sensing systems --- Remote terrain sensing --- Sensing, Remote --- Terrain sensing, Remote --- Aerial photogrammetry --- Aerospace telemetry --- Detectors --- Space optics --- Measuring --- Mensuration --- Mathematics --- Technology --- Metrology --- Physical measurements --- Measurements, Physical --- Mathematical physics --- Measurement --- Astronomical observations --- Observations, Astronomical --- Science and space --- Space research --- Cosmology --- Science --- Climate --- Climate science --- Climate sciences --- Science of climate --- Atmospheric science --- Geological physics --- Terrestrial physics --- Earth sciences