Czech astronomer Josef Jan Frič, founder of the <a href="https://en.wikipedia.org/wiki/Astronomical_Institute_of_Czech_Academy_of_Sciences" class="extiw" title="en:Astronomical Institute of Czech Academy of Sciences">Astronomical observatory</a> in Ondřejov
Czech Wikipedia user <a href="//commons.wikimedia.org/wiki/User:Packa" title="User:Packa">Packa</a>
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