A long, thin, moderatly bright nebulous region running north to south near
Alnitak (Zeta Orionis), the eastern star
of Orion's Belt. IC 434 is better known
than its Index Catalogue number might suggest: it
is the bright background nebula against which the famous dark region called
the Horsehead Nebula is silhouetted.
Nearby are the Flame Nebula (NGC 2024)
and the reflection nebula NGC 2023.
AND STAR CLUSTERS