Long-time exposure of polar star trails above 4m. Mayall reflecting telescope at Kitt Peak Observatory,Arizona | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Espenak, Dr. Fred |
Taille de l’image : | 3681 px × 4748 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |