English Jean Focas Cited by user Tzim78 on 16 Apr 2023 Jean-Henri Focas (Ιωάννης Ε. Φωκάς; 20 July 1909 – 3 January 1969) was a Greek-French astronomer, painter, designer, illustrator, astrophysicists, photographer…
English Meudon Great Refractor Cited by user Fotaun on 16 Nov 2019 Meudon Great Refractor (i.e. the Grande Lunette) is a double telescope with lenses (83 cm + 62 cm), in Meudon, France.