3.58 meter mirror for the New Technology Telescope (NTT)

Early July 1988, the 3.58 meter mirror for the New Technology Telescope (NTT) rests on its active support system during the final tests at the Carl Zeiss (Federal Republic of Germany) works in Oberkochen, FRG. The 6-ton mirror blank is made of Zerodur, a glass ceramic, and was produced by Schott in Mainz, FRG. The polishing of the mirror by Zeiss has taken two years in order to obtain an unsurpassed optical quality. The exceedingly smooth surface has residual errors of no more than 25 nanometers (1 nanometer = 1 millionth of a millimeter).

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ESO

O zdjęciu

Identyfikator:eso8805a
Typ:Fotograficzny
Data publikacji:14 lipca 1988
Powiązane komunikaty:eso8805
Rozmiar:1305 x 1734 px

O obiekcie

Nazwa:New Technology Telescope
Typ:Unspecified : Technology : Observatory : Telescope
Kategoria:La Silla

Formaty zdjęć

Wielki JPEG
798,6 KB