Servicing Mission 4 - Overview - Objectives

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SM4 OVERVIEW

NASA Fact Sheets

Tasks of SM4:

Install WFC3 - Wide Field Camera 3	A high-resolution/wide-field camera with continuous coverage of wavelengths or colors of light from the ultraviolet to the near-infrared. + Read more
Install COS - Cosmic Origins Spectrograph	The most sensitive ultraviolet spectrograph ever planned to fly on HST. + Read more
Repair STIS -	Restore the Space Telescope Imaging Spectrograph to operational status. + Read more
Repair ACS	Restore critical scientific functionality to the Advanced Camera for Surveys + Read more
Replace Rate Sensor Units (gyroscopes)	Complete change-out of all six gyroscopes, the heart of HST's pointing system, and HST's main wear-out items. + Read more
FGS - Fine Guidance Sensor	Last in a series of changed-out units that allow fine pointing of HST. + Read more
Replace Batteries	Replace the six batteries originally launched with Hubble in 1990, which are steadily losing capacity as they age. + Read more
Install Soft Capture Mechanism	Install the Soft Capture Mechanism on the aft end of Hubble to aid autonomous rendezvous and capture of Hubble of a future mission. + Read more
New Outer Blanket Layers (NOBLs)	Install NOBLs to thermally protect equipment bays whose thermal insulation has been degraded by the space environment. + Read more
Replace SIC&DH	Replace the original launched with Hubble in 1990 to insure redundancy of operations. + Read more

+ Wide Field Camera 3

+ Cosmic Origins
Spectrograph

+ Space Telescope Imaging
Spectrograph Repair

+ Advanced Camera for
Surveys Repair

+ Space Telescope
Operations Control Center

+ Fine Guidance Sensor

+ New Outer Blanket Layer

+ Soft Capture and
Rendezvous System

+ Super Lightweight
Interchangeable Carrier

+ Science Instrument
Command and Data
Handling Module

Link to SM4 multimedia page

SM4 Media Guide (PDF)
SM4 Images and Videos

image of man and shuttle - link to SM4 multimedia page

related content

+ NASA's WFC3 website

+ NASA's COS website

+ NASA's ACS website

+ NASA's STIS website

+ Hubble Site (STScI)

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