Telescopes on Mauna Kea English: https://en.wikipedia.org/wiki/Mauna_Kea_Observatories Deutsch: https://de.wikipedia.org/wiki/Mauna-Kea-Observatorium
Telescopes on Haleakala: English: https://en.wikipedia.org/wiki/Haleakala_Observatory
Laser guide star: English: https://en.wikipedia.org/wiki/Laser_guide_star
