In addition, the solar arrays and their drive electronics were replaced, as well as four of the gyroscopes used in the telescope pointing system, two electrical control units and other electrical components, and two magnetometers.. 
STScI maintains The custom-made stsst (Space Telescope science ọwọ́ Analysis system) software, which contains all the programs needed to run pipeline reduction on raw Data Files, as well as many other astronomical image Processing tools, Taired to the pẹjaments of Hubble Data.. 