Experimenting with the 'plastic, fantastic' 50mm f1.8 lens yielded these star trails over Cove Arch in NE Arizona.
Specs are:
20 min. exp. (10 frames x 2 min.) @ f2
ISO 800
Cheap ($35) intervalometer allowing me to snooze while the exposures were taken.
And a cool postprocessing technique shared by David Kingham, starscape photographer extraordinaire.