Kitt Peak National Observatory
Photos taken observing runs on tht WIYN 3.5m and WIYN 0.9m telescopes in 2008 and 2010.
I also created some time lapse movies of the sunset and night sky.
Individual telescopes
The Mayall 4m telescope
Nature and wild life on Kitt Peak
Night sky
Telescope panoramas
The McMath-Pierce Solar Telescope
Sunsets above Kitt Peak
The visitor center
WIYN: The Wisconsin-Indiana-Yale-NOAO telescope