File:Astronaut Hoffman held the Hubble Space Telescope WF PC1 during the STS-61 mission 9400368.jpg
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editDescriptionAstronaut Hoffman held the Hubble Space Telescope WF PC1 during the STS-61 mission 9400368.jpg |
Français : L'astronaute Hoffman manipule l'instrument Wide Field/Planetary Camera-1 (WF/PC1) qui vient d'être retiré du télescope spatial Hubble pour être remplacé par WF/PC2 durant la mission STS-61 English: Astronaut Hoffman held the Hubble Space Telescope (HST) Wide Field/Planetary Camera-1 (WF/PC1) that was replaced by WF/PC2 in the cargo bay of the Space Shuttle orbiter Endeavour during Extravehicular Activity (EVA). The STS-61 mission was the first of the series of the HST servicing missions. 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. During four spacewalks, the STS-61 crew replaced the solar panel with its flexing problems; the WF/PC1 with WF/PC2, with built-in corrective optics; and the High-Speed Photometer with the Corrective Optics Space Telescope Axial Replacement (COSTAR) to correct the aberration for the remaining instruments. The purpose of the HST, the most complex and sensitive optical telescope ever made, is to study the cosmos from a low-Earth orbit for 15 years or more. The HST provides fine detail imaging, produces ultraviolet images and spectra, and detects very faint objects. The Marshall Space Flight Center had responsibility for design, development, and construction of the HST. The Perkin-Elmer Corporation, in Danbury, Cornecticut, developed the optical system and guidance sensors. |
Date | |
Source | http://mix.msfc.nasa.gov/abstracts.php?p=1712 |
Author | NASA |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS Windows |
File change date and time | 10:27, 6 May 2005 |
Color space | Uncalibrated |
Image width | 1,994 px |
Image height | 3,000 px |
Writer | FRED DEATON |
Date and time of digitizing | 04:27, 6 May 2005 |
Date metadata was last modified | 04:27, 6 May 2005 |
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IIM version | 2 |