Hubble mirror polishing

Autor:

NASA Marshall Space Flight Center

Credit:

NASA Marshall Space Flight Center Collection (NIX MSFC-7995584)

Krótki link:

https://plwiki.pl/b/3c51

źródło:

Wikimedia Commons

Wymiary:

3000 x 2401 Pixel (1352779 Bytes)

Opis:

Hubble Space Telescope Primary Mirror: This photograph shows the Hubble Space Telescope's (HST's) Primary Mirror being ground at the Perkin-Elmer Corporation's large optics fabrication facility. After the 8-foot diameter mirror was ground to shape and polished, the glass surface was coated with a reflective layer of aluminum and a protective layer of magnesium fluoride, 0.1- and 0.025-micrometers thick, respectively. The purpose of the HST, the most complex and sensitive optical telescope ever made, is to study the cosmos from a low-Earth orbit. By placing the telescope in space, astronomers are able to collect data that is free of the Earth's atmosphere. The Marshall Space Flight Center had responsibility for design, development, and construction of the HST and the Perkin-Elmer Corporation, in Danbury, Connecticut, developed the optical system and guidance sensors.

Licencja:

Public domain

Komentarz do licencji:

NASA