Tried out the Canon 28-300mm L lens for astrophotography. Always wanted to get a wide-field shot of the Orion complex (including Horsehead and Flame), and it just fit in the FoV at 300mm.
Total exposure: 4hr 36min (80 x 15-sec + 80 x 30-sec + 76 x 1-min + 70 x 2-min)
Canon 40D + Canon 28-300mm L @ 300mm, f/8, ISO1600
Sirius EQ-G mount
Captured using ImagesPlus Camera Control, stacked in DSS, processed in Photoshop CS3
Looks pretty sharp even at close crop (almost 100% here):