STS-61 was NASA’s first Hubble Space Telescope servicing mission, and the fifth flight of the Space Shuttle Endeavour. The mission launched on December 2, 1993, from Kennedy Space Center (KSC) in Florida. The mission restored the space-borne observatory’s vision (marred by spherical aberration in its mirror) with the installation of a new main camera and a corrective optics package (COSTAR). This correction occurred more than three and a…
The Hubble Space Telescope’s (HST) Servicing Mission 4 (SM4), flown by the Shuttle Atlantis in May 2009, was the last scheduled shuttle mission for HST (launched 11th of May 2009, STS-125). SM4 installed the replacement data-handling unit, repaired the ACS and STIS systems, installed improved nickel hydrogen batteries, and replaced other components including all…