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Bart Seys: Grote Beer met aangeduide detail 1 en 2
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Bart Seys: Grote Beer met Detail 1 : IRIDIUM flares
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Bart Seys: Grote Beer met Detail 2 - iridium flash
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Bart Seys: Grote beer origineel
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Bart Seys: Iridium Flares
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Bart Seys: Poolster - Polaris
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Bart Seys: ISS 26mei 77 sec
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Bart Seys: ISS 27 MEI 190 SEC
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Bart Seys: iss
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Bart Seys: Starlink. (1)
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Bart Seys: Starlink. (2)
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Bart Seys: venus