Ronald Stoyan – författare

Messier's catalog of 110 star clusters, nebulae, and galaxies is the most popular list of deep sky gems. The first edition of this stunning reference atlas was hailed as the most comprehensive, detailed, and beautiful account of the Messier objects then available. The second edition continues this trend, with thoroughly investigated and updated astrophysical, historical, and observational information for every object. The main object photos have all been replaced with more than 150 new images from some of the world's best amateurs displaying the objects' splendor through large-scale color images. Historical sketches from classical observers from the nineteenth century are presented, alongside the author's modern deep-sky drawings. Extensive information is given on visual observation from using the naked eye and binoculars through to large modern amateur telescopes. Astronomers of all abilities will delight in the Atlas's return as your guide to the sky's finest objects.

The interstellarum Deep Sky Atlas heralds a new era of celestial cartography. It is an innovative, practical tool to choose and find stars, star clusters, nebulae and galaxies. Usually, deep sky objects are shown with just a standard symbol in the star charts. This atlas is different: all objects are shown according to their actual visibility. Four main visibility classes separate out objects that can be seen through 4-, 8- and 12-inch telescopes. Within each visibility class, the objects are labeled in different type weights and using graduated shades and colors for the symbols - the bolder the label or the darker the symbol, the easier it is to see the object. Spiral-bound and printed in red-light friendly colors on dew-resistant paper, this full-sky atlas has a limiting magnitude of 9.5, plotting over 200,000 stars. It is the ideal companion for amateur observers of all levels.

The interstellarum Deep Sky Atlas set a new high standard for modern celestial cartography. The same team now presents the interstellarum Deep Sky Guide, its unique observing companion. Taking an intuitive visual approach, for each spread of the Atlas, the Guide focuses on carefully selected objects, either as colored composite POSS plates or through the authors' own eyepiece sketches. They allow you to estimate the visibility of features in the telescope while planning observations. Stars and other objects in the vicinity are highlighted, so they also serve as finder charts at night. An index map on each spread allows you to quickly find each object's location in the Atlas. The interstellarum Deep Sky Guide takes all the hassle out of preparing for observing sessions - there's no need to print star charts or photos. Simply grab your Atlas and your Guide, and go observe! This Field Edition is produced using waterproof materials.

Throughout the ages, comets, enigmatic and beautiful wandering objects that appear for weeks or months, have alternately fascinated and terrified humankind. The result of five years of careful research, Atlas of Great Comets is a generously illustrated reference on thirty of the greatest comets that have been witnessed and documented since the Middle Ages. Special attention is given to the cultural and scientific impact of each appearance, supported by a wealth of images, from woodcuts, engravings, historical paintings and artifacts, to a showcase of the best astronomical photos and images. Following the introduction, giving the broad historical context and a modern scientific interpretation, the Great Comets feature in chronological order. For each, there is a contemporary description of its appearance along with its scientific, cultural and historical significance. Whether you are an armchair astronomer or a seasoned comet-chaser, this spectacular reference deserves a place on your shelf.