Advanced Camera for Surveys (ACS) |
The Advanced Camera for Surveys (ACS) was installed on the HST during SM3B in 2002. An electronics failure in January, 2007 rendered inoperable the two most-used science channels, and ACS currently runs on one remaining channel. A repair attempt by space-walking astronauts during SM4 will specifically target restoration of the Wide Field Channel (WFC), the workhorse responsible for 70% of the pre-2007 ACS science. The goal, however, is to restore both of the inoperable channels while preserving the third, bringing ACS back to full capability. + Read More |
Cosmic Origins Spectrograph (COS) |
Installing the Cosmic Origins Spectrograph (COS) during SM4 will effectively restore spectroscopy to Hubble's scientific arsenal, and at the same time provide the telescope with unique capabilities. Together with the other new Hubble instrument - the Wide Field Camera 3 (WFC3) - COS will journey toward more ground-breaking scientific discoveries.
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Space Telescope Imaging Spectograph Repair (STIS-R) |
The Space Telescope Imaging Spectrograph (STIS) was installed on the HST during SM2 in 1997. STIS stopped functioning in August 2004 due to a power supply failure, and is currently in "safe mode" pending a repair attempt during SM4.
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Wide Field Camera 3 (WFC3) |
After astronauts install the Wide Field Camera 3 (WFC3) during SM4, it will continue the pioneering tradition of previous Hubble cameras, but with critical improvements to take the telescope on a new voyage of discovery. Together with the new Cosmic Origins Spectrograph (COS), WFC3 will lead the way to many more exciting scientific discoveries.
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Hubble Science Instrument Location Graphics |
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| Hubble Science Instrument Comparison Graphics |
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