UH 0.6m UH 0.6-m telescope 0.6m University of Hawaii 1968
UH 2.2m UH 2.2-m telescope 2.2m University of Hawaii 1970
IRTF NASA Infrared Telescope Facility 3.0m NASA 1979
CFHT Canada-France-Hawaii Telescope 3.6m Canada/France/UH 1979
UKIRT United Kingdom Infrared Telescope 3.8m United Kingdom 1979
Keck I W. M. Keck Observatory 10m Caltech/University of California 1992
Keck II W. M. Keck Observatory