00-0293-21
Keck Observatory under construction
00-0293-27
Keck Observatory under construction
00-0405-12
Keck Observatory under construction
00-0405-18
Keck Observatory under construction
99-0823-28
Construction of Keck Observatory
99-0824-01
Construction of Keck Observatory
99-0824-06
Construction of Keck Observatory
99-0824-13
Construction of Keck Observatory
99-0824-17
Construction of Keck Observatory
99-0824-23
Construction of Keck Observatory