Nebulae
Emission Nebulae
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Orion Nebula
NGC 3372
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M43 vs IC 1871
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apparent magnitude of the Crab Nebula
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IC 5070 at 3am on 18 May 2012
Planetary Nebulae
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Ring Nebula
NGC 2242
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NGC 246, IC 4732, M76
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NGC 7662 apparent magnitude
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Helix Nebula on Sep 22, 1998 at 10:35pm
Bright H II Regions
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NGC 604
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IC 140 vs IC 142
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