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Yitao Liu: VirgoA-M
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Yitao Liu: M78-IC434
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Yitao Liu: IC2177
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Yitao Liu: IC1805
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Yitao Liu: M31
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Yitao Liu: IC1848 & 1805
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Yitao Liu: M27
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Yitao Liu: Comet 2009/p1
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Yitao Liu: Comet 2009/P1 & M71
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Yitao Liu: Milkyway in Bashang
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Yitao Liu: Milkyway in Bashang
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Yitao Liu: Helix Nebula
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Yitao Liu: Veil Mosaic
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Yitao Liu: North America Nebula mosaic
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Yitao Liu: Rosset & Cone Mosaic
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Yitao Liu: IC434
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Yitao Liu: Orion
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Yitao Liu: Comet 103P
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Yitao Liu: California Nebula
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Yitao Liu: Cygnus Part
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Yitao Liu: SE2010 @Beijing
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Yitao Liu: TSE 2008 @Yiwu
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Yitao Liu: Comet 17P
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Yitao Liu: Venus Transit with plane
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Yitao Liu: Smokey Montain
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Yitao Liu: 8hrs Star Tails
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Yitao Liu: Orion meteor shower 2012
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Yitao Liu: Triangulum Galaxy
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Yitao Liu: Iris Nebula
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Yitao Liu: Fall Milky Way