Unclassified
Schmidt–Cassegrain telescope
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Unclassified
Schmidt–Cassegrain telescope
Type of catadioptric telescope
rare · Q1205220
Related cards · astronomical instrument
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Organizations
Antikythera mechanism
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Unclassified
Astrolabe
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Places
Armillary sphere
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.jpg/330px-Event_Horizon_Telescope_Collaboration_(testing-general-relativity-with-the-event-horizon).jpg)
Places
Event Horizon Telescope
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Meta topics
Laser guide star
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Unclassified
Coronagraph
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