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David Levy's Guide to Observing and Discovering Comets
 
 
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David Levy's Guide to Observing and Discovering Comets (Paperback)

de David H. Levy (Author) "When Shakespeare wrote that comets import change of times and states, he had something else in mind other than a comet literally plowing into Earth,..." En savoir plus
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"One of the most successful comet descoverers in history, Levy has produced a very readable account of his fascination with comets... highly recommended to amateur astronomers and other wishing an introduction to the scientific process of discovery." Choice


Review

"One of the most successful comet descoverers in history, Levy has produced a very readable account of his fascination with comets.... highly recommended to amateur astronomers and other wishing an introduction to the scientific process of discovery." Choice
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When Shakespeare wrote that comets import change of times and states, he had something else in mind other than a comet literally plowing into Earth, with devastation so great as to destroy most of life here. Lire la première page
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Plat recto | Droit d'auteur | Table des matières | Extrait | Index | Plat verso
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3.0étoiles sur 5 Interesting but not a practical guide for the amateur, Jui 15 2004
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I bought this book by noted comet discover David Levy hoping that it would serve as a practical guide for amateur astronomers interested in observing and studying comets. Instead, this book is mostly about how Mr. Levy and his dedicated search team discover comets. If you're looking for advice on what type of telescope is best for observing comets (or maybe large binoculars are better?) you won't find it here. While Levy briefly mentions the telescopes he uses, there was no discussion of the equipment options available to the typical amateur astronomer on a budget (wide field refractors and reflectors, binoculars, etc.). The book also lacks advice regarding the weather conditions and locations that are best for observing comets - except to note that at one point Levy and his family moved to Arizona. That's great for them, but what about the rest of us who can't pack up our lives and move to the desert? The book is light on text and heavy on black and white images, many of which are grainy and provide little useful information. One of the more informative sections of the book is the explanation of the arcane new naming system for comets that was developed by the International Astronomical Union in the mid 1990s. There is also a brief discussion of the morphology of comets and the terminology used to describe the various components that can be seen visually. I would have liked this discussion to have been more detailed, perhaps citing various examples based on visual observations using amateur instruments. Levy devotes a large section of the book to his discovery of Comet Shoemaker-Levy, which collided with Jupiter in 1994. Although this is a significant achievement worthy of mention, its important to note that this comet was discovered using a large professional telescope the likes of which most amateurs will never be able to use. Levy also devotes considerable space to describing his experience searching for comets photographically, on old plates, and with CCDs, yet he gives short shrift to visual observation, which is relegated to the back of the book. As Levy correctly notes, the advent of inexpensive CCD cameras and remote telescope operation, combined with wide-field astrograph telescopes, has largely replaced visual sweeping as the main method of comet discovery. However, most readers of this book will probably not be engaged in comet discovery efforts, but will be using their eyes to search for known comets. It is this type of casual visual observer that the book largely lets down. Based on Mr. Levy's reputation as a dedicated and accomplished amateur observer, I was expecting a more comprehensive treatment of the subject that could serve both as a reference and as a practical guide at the eyepiece. Instead, I found this book to be mainly a recap of the notable achievements of the Levies and a few of their colleagues. Interesting, but not exactly a practical guide for the amateur.
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