NEBULA |
galactic |
Hα maximum |
Hα |
Hα net height |
Hβ maximum |
Hβ |
Hβ net height |
Hα/Hβ |
H4-1 | IC 2448 | J 900 | NGC 2022 | NGC 6578 | NGC 7026 | NGC 7662 | Pe1-18 |
NEBULA |
Hα/Hβ |
Galactic |
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@2002 Williams College