Mayall 4-Meter Telescope.

- Image ID: D7942X
inga spence / Alamy Stock Photo
Image ID: D7942X
Mayall 4-Meter Telescope. The blue 'horseshoe' equatorial mounting supports and moves the telescope. National Optical Astronomy Observatory (KPNO) Located just below the summit of Kitt Peak.
Location: Kitt Peak, Arizona, United States