Carl Zeiss Telementor and Telemator equatorial mount repair
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Zeiss Telementor 2 remastered
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20200602 Kis távcsövek dicsérete
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Landing with Latam in La Serena
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My Zeiss grinding and polishing machine
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90Days Manufacturing process of Steel Mill STAN with 100yrs old technqiues
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Zeiss 63mm Telescope Evolution
2:26
Casting a $20 Million Mirror for the World’s Largest Telescope
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