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Astronomical Companion
Astronomical Companion


 
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Product Code: ACOM

  
Description
 

Click the cover image to view sample pages from the Astronomical Companion


The Astronomical Companion is a general guide to astronomy. Some say it should be called the "Astronomical Treasury". Printed on the same large page-size as the Astronomical Calendar. The Companion begins with an "Overview of Astronomy" and illustrations that make it easy to understand coordinate systems and orientation in space.


A thread running through the book is the series of 30 ten-inch-diameter diagrams showing expanding spheres of space, from the Moon's orbit and the domains of planets and comets out through the nearest stars, the neighboring regions of our Milky Way galaxy, the whole galaxy, the local group of galaxies, the Virgo cloud, and so on to the eerie limits of the universe.

Among many other features: a map and catalogue of star names with their derivations; the seasons (including their linking with traditional dates such as Beltane, Halloween, St. Lucy's Day); the world's calendars; precession and its many consequences; "Moonlight" and "Earthlight" and "Moon as Signpost"; comparative distances; a comprehensive Hertzsprung-Russell Diagram (the graph that relates all the kinds of star by color and brightness); and pages on constellations, meteor showers, double stars, variable stars, even cloudiness by month and region. Guy Ottewell updated the Astronomical Companion in 2011.



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