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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Basic historical milestones for defining the constellations
 Pechman, Matouš ; Šolc, Martin (advisor) ; Wolf, Marek (referee)
- Basic historical milestones for defining constellations People have always been fascinated by the starry sky. At first stars were only small distant lights, though people had no idea how far these lights actually were. It was a long way to the form of constellations as know them now. It started from only the brightest stars, which were supposed to be placed on spherical surface and their placement was associated with different types of characters of ancient nations, animals and things from their daily life or old legends and led to a distribution of the heavenly sphere to 88 areas with exactly defined borders. All of that took thousands of years of work and observations of generations of astronomers, improvement of instruments to measurement and writing down the positions of the celestial bodies. Research of constellations has never been a mere description of reality, but it has always been reflected in the thoughts and views of the world of a given culture or civilization.
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The Optical Parameters of Objective Lens Secrétan Paris 130/1930 of Observatory of Úpice
 Rail, Zdeněk ; Melich, Zbyněk
The Optical Parameters of Objective Lens Secrétan Paris 130/1930 of Observatory of Úpice Objective lens of Secrétan Paris 130/1930 of Úpice observatory was cleaned a measured its optical parameters in IPP AS CR, v.v.i. - TOPTEC. In this paper we present results of mathematical simulation of residual aberrations of this lens.
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