99-0823-28
Construction of Keck Observatory
00-0405-18
Keck Observatory under construction
00-0405-12
Keck Observatory under construction
00-0293-27
Keck Observatory under construction
00-0293-21
Keck Observatory under construction
00-0293-07
Keck Observatory under construction
00-0293-04
Keck Observatory under construction
00-0293-01
Keck Observatory under construction
00-0257-26
Keck Observatory under construction
00-0257-21
Keck Observatory under construction