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Maarten VLH: SH2-155 - The Cave Nebula
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Maarten VLH: VDB 123 in the Serpens Cloud
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Maarten VLH: M 16, The Eagle Nebula
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Maarten VLH: LDN 183, a dark nebula in Serpens
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Maarten VLH: LDN 183, a dark nebula in Serpens