Timelapse footage of amateur astronomers setting up their telescopes at dusk. They use red light to illuminate their equipment as long wavelengths do not affect the dark adaptation of the eye. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Tafreshi, Babak |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Länge: | 21 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |