Wil Tirions Bright Star Atlas 20000 PDF Download

A practical guide to binocular and small telescope observing. Night Sky Atlas combines clear, accurate star maps with reliable and informative text. This is a highly practical atlas for beginning sky gazers using binoculars or a small telescope. Sturdy binding makes it suitable for outdoor use. Cover flaps can be used as page-markers. The sewn binding allows the atlas to be opened flat. The star maps are drawn with black stars on a white background, allowing observers to pencil in their own observations. The high quality paper can withstand repeated use of an eraser. The book begins by presenting the whole sky in a series of six maps, showing stars down to magnitude 5.5 -- all visible with binoculars or a small telescope. Opposite each map is a photo-realistic image that shows how the same portion of sky looks to the naked eye, allowing less-experienced observers to quickly find specific objects of interest. The maps can be used for planning observations, navigating from one part of the sky to another and for a quick reference guide. Other features include: Forty large scale constellation charts A full set of seasonal charts Maps of the Moon and the planets Deep sky maps identifying double stars, nebula and more. A comprehensive index provides the location of information for all the night sky objects and features covered in the atlas. The Night Sky Atlas is the ideal portable reference for backyard astronomers.