Kitt Peak National Observatory,Tucson,Arizona,USA,at night. With 23 telescopes,this is the largest collection of astronomical instruments in the world. From left to right the telescopes seen here are: the Spacewatch 1.8-meter telescope,the Spacewatch 0.9-metre telescope,the Bok 2.3-metre telescope (operated by the Steward Observatory,University of Arizona) and the Mayall 4-metre telescope | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nunuk, David |
Taille de l’image : | 5100 px × 3430 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |