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The optimal guideline assistance. Simple and fast. Stars, constellations and directions are also in the dark fastly certained. Only date and time adjust - and with only one trick is the northern starlit sky clear.
Hermann Michael Hahn is member of the Planetary Society and chairmen of the people observatory Cologne. For many years he successfully works as free science journalist with emphasis astronomy and space travel. It published already numerous books to this range of topics. The commercial artist Gerhard Weiland is specialized in astrotopics. Additionally: interesting information and guideline assistance in the guidance booklet.
Format: 29x34 cm
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