Agency
Herschel primary mirror in the coating chamber
The Herschel telescope’s primary mirror is being coated with a thin aluminium cover, which is the ‘working’ surface of the telescope, in the vacuum chamber by Calar Alto Observatory, Spain.
Herschel telescope's primary mirror
Herschel’s telescope
Herschel primary mirror's petals
Herschel’s telescope mirror covered with a protective foil
