Public domain
History of Hubble Space Telescope (HST)
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
This photograph shows an STS-61 astronaut training for the Hubble Space Telescope (HST) servicing mission (STS-61) in the Marshall Space Flight Center's (MSFC's) Neutral Buoyancy Simulator (NBS). Two months after its deployment in space, scientists detected a 2-micron spherical aberration in the primary mirror of the HST that affected the telescope's ability to focus faint light sources into a precise point. This imperfection was very slight, one-fiftieth of the width of a human hair.
NASA Image and Video Library’s own descriptionCredit lineHistory of Hubble Space Telescope (HST). NASA/MSFC, 1993-07-09. Public domain. ID: 9307457.
