دانلود کتاب The Observer's Sky Atlas: With 50 Star Charts Covering the Entire Sky, Third Edition

The Observers Sky Atlas contains star charts and information for all those who observe the night sky with unaided eyes, with binoculars, or with small telescopes, and also for those who just wish to look at constellations and interesting objects. Equally useful for the beginning observer and the old hand, the atlas presents -a short introduction into observing the sky and a thorough description of the star charts and tables- clearly arranged charts of all the stars visible with the unaided eye (up to 6th magnitude)- enlarged chart sections for binocular observation, highlighting 250 interesting nebulae, galaxies, and stellar clusters (to magnitude 9)- a catalog of more than 1000 objects that takes into account the far-reaching measurements of Hipparcos Satellite published in 1997- tables of predicted separations of binary stars until the year 2015 The Observers Sky Atlas is an indispensable and handy companion for every observer.