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Atlas of the Stars: New EditionAtlas of the Stars: New Edition

Atlas of the Stars: New Edition

Atlas of the Stars - 01

Astronomy magazine's Atlas of the Stars is a must-have for anyone who wants to learn the constellations, find the brightest stars, and view the best deep-sky objects. This easy-to-use issue shows everything you can see in the night sky with the naked eye or with a small telescope. - Contains 87,000 stars down to magnitude 8.5. - Has more than 1,200 deep-sky objects. - Enjoy more than 100 high-quality photographs of celestial objects. - 100 packed pages with accurate and easy-to read star maps and informative articles.

United States
Kalmbach Publishing Co. - Magazines
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tour the night sky

When the staff of Astronomy magazine decided to produce its first star atlas in 2006, we had no idea how popular it would be. We certainly didn’t expect it to sell out after only a few months. But it did. After that, demand from readers and amateur astronomers grew to a point that, in 2010, we produced a second edition.That project involved a complete revamping of the original’s star maps. In fact, by increasing our magnitude limit from 8.0 to 8.5, we nearly doubled the number of displayed stars from 45,000 to 87,000. We stopped there because if we added even fainter stars their density would make the charts far less usable. This limit is perfect for binocular observers and amateur astronomers who use telescopes at low power, employing eyepieces…

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atlas glossary

ASTERISM — An unofficial, recognizable group of visible stars.CONSTELLATION — One of 88 arbitrary configurations of stars; the officially recognized area of the sky containing one of these configurations.DECLINATION — An Earthcentered angle that gives an object’s position either north (positive declination) or south (negative declination) of the celestial equator.DOUBLE STAR — Two stars that appear close to one another, linked either physically by gravity or chance alignment.FIELD OF VIEW — The area visible through the eyepiece of a telescope or through binoculars. Manufacturers measure field of view as an angle. Binoculars, therefore, may have a field of view of 7°.GALAXY — A collection of dust, gas, and stars held together by gravity; types include elliptical, irregular, and spiral.GLOBULAR CLUSTER — A spherical collection of old stars found within the…

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the greek alphabet and star maps

Modern-day star designations (excluding proper names like Arcturus and Betelgeuse) date from 1603. In that year, German map maker Johannes Bayer published Uranometria, an atlas of the constellations. He plotted more than 2,000 stars, and his system differed from previous charts. Before Bayer, stellar cartographers designated stars by their positions within the mythological figures of the constellations.Bayer’s system used Greek letters to differentiate the brightnesses of stars in a constellation. So the first Greek letter, Alpha (α), usually denoted a constellation’s brightest star, Beta (β) was the second-brightest, and so on. Bayer estimated brightnesses by eye, so some discrepancies exist.Also, Bayer sometimes lettered stars sequentially. The Big Dipper is an example. Starting at the end of the bowl, Bayer lettered its stars Alpha, Beta, Gamma, Delta, Epsilon, Zeta, and Eta.…

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the queen’s clusters

OPEN CLUSTER NGC 663 in Cassiopeia shines at magnitude 7.1 and measures 15 across. Use 50x or less to observe it.Cassiopeia the Queen is the highlight constellation of our first star map. Easily recognized by its W or M shape, many of the celestial targets in this area are open star clusters within Cassiopeia’s boundaries. For more on observing these star groups, see “Beacons in the dark: observing open clusters” on page 77.A notable sight outside Cassiopeia is Kemble’s Cascade (NGC 1502), which glows at magnitude 5.7 in Camelopardalis the Giraffe. Franciscan amateur astronomer Father Lucian Kemble (1922–1999) first described this chance alignment of stars (it’s not a true star cluster). He found it while scanning the sky through binoculars.Binoculars that yield 15x reveal a dozen stars in a 2.5°-long…

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the end of the new general catalogue

YOU’D HAVE TO READ through more than 99 percent of the New General Catalogue before you’d encounter open cluster NGC 7789.Printed in 1888, John L. E. Dreyer’s New General Catalogue (NGC) is one of the prime references for bright deep-sky objects. The catalog contains 7,840 entries.Some well-known NGC objects are the Andromeda Galaxy (NGC 224), the Orion Nebula (NGC 1976), and the Ring Nebula (NGC 6720). Most objects have more than a single designation. For example, these objects also are Charles Messier’s catalog entries M31, M42, and M57, respectively.You’ll find all objects entered according to their right ascension. Lying at right ascension 23h57m — and thus numbered near the catalog’s end — is one of the sky’s most spectacular open clusters, NGC 7789 in Cassiopeia (Map 1). A 4-inch scope…

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the bear’s realm

BODE’S GALAXY (M81), left, and the Cigar Galaxy (M82) lie in the northernmost reaches of Ursa Major. Use an eyepiece that provides a wide field of view to see both of these galaxies at once (RICHARD JACOBS)THE SPLINTER GALAXY (NGC 5907) appears 10 times as long as wide because we see it edge-on. Also known as the Knife-edge Galaxy, NGC 5907 lies 40 million lightyears away. (BRAD EHRHORN/ADAM BLOCK/NOAO/AURA/NSF)ALTHOUGH M106 SHINES at magnitude 8.4, it is an under-observed galaxy in Messier’s catalog because it doesn’t show much detail through small scopes. Look for its compact arms from a dark siteThe dominant constellation on the next map is Ursa Major the Great Bear. Because this region is far from the Milky Way — where star clusters and nebulae abound — most…