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This book is for the amateur astronomer who wants to know about the astrophysical nature of deep sky objects. The information is presented in a concise format and is equally valuable when used as background reading or, alternatively, at the telescope eyepiece. The past decades have seen an unprecedented increase in professional astronomers' understanding of astronomical objects. However, generally this information is contained in journal publications that most amateur astronomers either do not have access to or would find difficult to read. In this book, basic data on each object (e.g., magnitude, location, distance, age if known) is presented in a way that allows the reader to quickly access the information. This is followed by some remarks that capture the most fascinating astrophysical facts. Although there are thousands of deep sky objects observed by astronomers, only a small number of these are commonly observed by a wide audience. Thus, coverage here is limited to approximately 500 of the most commonly observed objects in the Northern Hemisphere and – an enhancement for the Second Edition – approximately 50 of those in the Southern Hemisphere. These are visible from the southern limits of the United States as well as from the southern continents. Another new feature of the Second Edition is the addition of amateur photographic images of all the Messier objects.
Atlas over de vigtigste galakser og nebuloser, som kan ses i teleskop af amatørastronomer.
Filled with concise descriptions and out-of-this-world photography, the National Audubon Society Pocket Guide to Galaxies & Other Deep-Sky Objects is designed to be compact enough to literally fit into any star-gazer's back pocket. This streamlined volume contains: an easy-to-use field guide covering more than 70 deep-sky objects; a complete overview of the evolution of galaxies, nebulae, quasars, star clusters and other objects in space that make up our universe. This pocket guide is packed with information; abundant color photographs and images capturing the magnificence of the stars that compose various deep-space phenomena; text detailing the different types of objects in space, specific names and cataloging of each space phenomena, information on measuring each object's distance and location in the sky and the minimal optical aid needed to observe a particular deep-space matter. From casual star-gazers, budding astronomers to the more experienced, the National Audubon Society Pocket Guide to Galaxies & Other Deep-Sky Objects is an excellent and convenient reference guide to bring along when skywatching.
Here is a unique and fascinating reference book for every serious deep-sky observer! Entries for each of more than 500 deep-sky objects provide far more than the usual astronomical data – they also detail, in every case, the most interesting facts. Physical factors, astrophysical information, evolution, unusual features, the list is endless. The objects are all listed in NGC order. Astronomers can now get an insight into exactly what they are looking at, to add a new level of insight and enjoyment to deep-sky observing.
No modern astronomer made a more profound contribution to our understanding of the cosmos than did Edwin Hubble, who first conclusively demonstrated that the universe is expanding. Basing his theory on the observation of the change in distanct galaxies, called red shift, Hubble showed that this is a Doppler effect, or alteration in the wavelength of light, resulting from the rapid motion of celestial objects away from Earth. In 1935, Hubble described his principal observations and conclusions in the Silliman lectures at Yale University. These lectures were published the following year as "The Realm of the Nebulae," which quickly became a classic work.
In this fresh list, Stephen James O'Meara presents 109 new objects for stargazers to observe. The Secret Deep list contains many exceptional objects, including a planetary nebula whose last thermal pulse produced a circumstellar shell similar to the one expected in the final days of our Sun's life; a piece of the only supernova remnant known visible to the unaided eye; the flattest galaxy known; the largest edge-on galaxy in the heavens; the brightest quasar; and the companion star to one of the first black hole candidates ever discovered. Each object is accompanied by beautiful photographs and sketches, original finder charts, visual histories and up-to-date astrophysical information to enrich the observing experience. Featuring galaxies, clusters and nebulae not covered in other Deep-Sky Companions books, this is a wonderful addition to the series and an essential guide for any deep-sky observer.
An introduction and reference guide to finding and studying 690 of the sky's deep-sky objects using a backyard telescope.
Take a tour of the universe with Sky & Telescope Contributing Editor Sue French. With 60 Small Scope Sampler columns, you will be out and exploring the wonders if the night sky in no time. Most of the objects are visible in a 4-inch telescope, making this full-color and easy-to-use book perfect for the backyard astronomer!
This book presents the amateur with fine examples of astronomical sketches and step-by-step tutorials in each medium, including pencil, pen and ink, chalks and pastels, painting and computer graphics programs. This unique book can teach almost anyone to create beautiful sketches of celestial objects by following simple, illustrated, step-by-step instructions. Readers can select a chapter related to their preferred class of object, and rapidly learn techniques in several media. Each chapter contains useful information regarding equipment, techniques for preserving and archiving sketches, and suggestions for accurate record keeping.