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Ko Hummel: M31, the Andromeda nebula
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Ko Hummel: maanfasen
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Ko Hummel: Moon, Venus
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Ko Hummel: Milkyway in the area of Cassiopeia
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Ko Hummel: The Moon today
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Ko Hummel: Auriga/Fuhrmann
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Ko Hummel: Sunset in Mare Crisium
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Ko Hummel: Milkyway in the Bargermoor
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Ko Hummel: A winternight
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Ko Hummel: Moon, Venus and clouds
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Ko Hummel: Mars, Moon and Venus
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Ko Hummel: California Nebula
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Ko Hummel: Half Moon
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Ko Hummel: The Plejades with nebulosity
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Ko Hummel: Moon detail
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Ko Hummel: Monduntergang
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Ko Hummel: Plejades with f=200 mm
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Ko Hummel: Orion nebula
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Ko Hummel: Horsehead dark cloud
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Ko Hummel: Plejades and California nebula
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Ko Hummel: Rosette nebula
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Ko Hummel: Orion nebula, large and small scale
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Ko Hummel: Fases of Venus
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Ko Hummel: Mondkranz
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Ko Hummel: Fases of Venus
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Ko Hummel: Rosette nebulae
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Ko Hummel: Eskimo Nebula
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Ko Hummel: M97 and M108 in Ursa Major
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Ko Hummel: Area around Deneb
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Ko Hummel: Dumbbell planetary nebula