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Elias Siatounis: Moon craters
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: National Observatory of Athens in Penteli
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Elias Siatounis: Jupiter from National Observatory of Athens in Penteli
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Elias Siatounis: Moon