M42 - Orion Nebula
The Orion Nebula is the brightest nebula visible from Earth and the closest massive star-forming region to our solar system. It's visible to the naked eye as the middle "star" in Orion's sword.
Distance: 1,344 light-years
Apparent Magnitude: 4.00
Apparent Size: 85' × 60' (2.5x Moon)
Constellation: Orion
Object Type: Emission Nebula (HII region)
Key Features:
- Nearest massive star-forming region
- Contains Trapezium cluster (4 bright stars)
- 700+ young stars
- Protoplanetary disks observed
- Visible to naked eye
- Most photographed nebula
Best Imaging Season: November - March
Optimal Integration: 5+ hours (short due to brightness)
