Universe ID: 10231

HST SM4 Battery Module Replacement EVA

Released on August 22, 2008

Battery Modules. The six batteries currently on board the observatory are all original equipment. After more than 17 years of continuous operation the batteries are degrading. In the current condition, the Hubble electrical power system requires careful management of system state of charge to assure adequate power margins for all operational scenarios. This will become more difficult, and will start to constrain operations. The replacement of the two Hubble battery modules (each containing three batteries) will rejuvenate the electrical power system. This, combined with the power system enhancements made in Servicing Mission 3B, will result in ample power margins for the remainder of Hubble's lifetime.

Credits

Bob Sauls (Frassanito and Associates): Lead Animator
Michael McClare (HTSI): Producer

Please give credit for this item to:
NASA Goddard Space Flight Center

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https://svs.gsfc.nasa.gov/10231

Data Used:

HST/WFPC2

Wide-Field Planetary Camera 2 (WFPC2) was installed in Dec 1993 and used to obtain high resolution images of astronomical objects. This camera was removed in the last servicing mission so it is no longer in service.

http://www.stsci.edu/hst/wfpc2/wfpc2_diag.html

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