All links of Huygens

Centro Astronómico Hispano AlemánCentro Astronómico Hispano Alemán
Gemini ObservatoryGemini Observatory
Paranal ObservatoryParanal Observatory
Subaru TelescopeSubaru Telescope
Palomar ObservatoryPalomar Observatory
Southern African Large TelescopeSouthern African Large Telescope
W. M. Keck ObservatoryW. M. Keck Observatory
Canadian Aspects of the Thirty Metre TelescopeCanadian Aspects of the Thirty Metre Telescope
The MMT ObservatoryThe MMT Observatory
McDonald ObservatoryMcDonald Observatory

Huygens related site: