Twinkling star Capella.
Atmospheric turbulence makes the stars twinkle. Moving the camera around while exposing allowed me to capture Capella's varying brightness and colors.
Date: September 1, 2012
Location: Hillerød, Denmark
Camera: Canon 550D (modified for astrophotography)
Lens: Tamron AF 28-200mm f/3.8-5.6 XR Aspherical (IF) (at 200mm, f/5.6)
Exposure: 10 seconds at ISO 400
Processing: Processed in Photoshop CS6