The Horsehead Nebula, Barnard 33, IC434 (emission nebula), NGC2024 (Flame Nebula)
6 x 4 arcminutes, 1630 ly away
5x 300sec @ ISO 1600, 6" 750mm Newtonian Reflector, Canon 50D (Mod)
The dark nebulous protusion is known as the Horsehead Nebula. It is backlit by the emissions from IC434 runing south of Zeta Orionis. IC434 absorbs and re-emits the energy from fron Sigma Orionis.
NGC2024, Flame Nebula, tank Track Nebula
Magnitude 13, 30 x 30 arc minutes, 815 ly away
AstrophotographyB33Horsehead NebulaIC434 Emission Nebula associated with B33Index Catalog ICIC434