Orion Nebula False Colour
The Great Orion Nebula (M42) is a true showpiece in the night sky. It is easily visible to the naked eye as a fuzzy patch in the sword of Orion, and is a beautiful sight in telescopes of all sizes. It lies fairly close to our part of the galaxy, lying some 1500 light years distant. The center portion contains a tight grouping of stars called the Trapezium. M43 lies just above the Trapezium region, and another bright reflection nebula called The Running Man Nebula is near the top of this frame.
This image is a false colour was taken through the narrowband filters Sulfur II, Hydrogen-alpha, and Oxygen III, mapped respectively to red, green, and blue.
Takahashi Sky 90 at f/4.5
SBIG STL-4020M (self-guided)
H-Alpha: 2h20m (20 minute subexposures)
Processed with Maxim/DL, CCDStack, and Photoshop CS4
Noel Carboni's Astronomy Tools