Lowell Observatory's 24" Clark Refractor in Flagstaff, Arizona. The telescope was installed in1896 and refurbished, as seen here, in 2014-2015.

---

Size: 3456px × 5184px
Location: Flagstaff, Arizona, USA
Photo credit: © Martin Ratcliffe / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 24, 24-, clark, flagstaff, lowell, mars, observatory, refractor, telescope