Seen from above after its old film of aluminum has been removed, Palomar Observatory's 200" Hale telescope mirror shows its internal honeycomb-like structure
Seen from above after its old film of aluminum has been removed, Palomar Observatorys 200" Hale telescope mirror shows its internal honeycomb-like structure
Seen from above after its old film of aluminum has been removed, Palomar Observatory's 200" Hale telescope mirror shows its internal honeycomb-like structure