Refracting celestial telescope. This kind of telescope uses lenses to produce a magnified view of a distant object. Here,the telescope has a focal length of 700mm,with a front glass (objective) of 60mm diameter. This telescope also features a 90-degree prism to allow comfortable viewing when the telescope is pointed upward and a small 'spotter' scope used for approximate pointing | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4299 px × 4299 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |