Lessons learned in extended-extended Spitzer Space Telescope operations

@inproceedings{StorrieLombardi2018LessonsLI,
  title={Lessons learned in extended-extended Spitzer Space Telescope operations},
  author={Lisa J. Storrie-Lombardi and Bolinda E. Kahr and Joseph C. Hunt and Sean Carey and Carson Lee Bennett and Nancy Ann Silbermann and Elena Scire and William Allen Mahoney and Patrick J. Lowrance},
  booktitle={Astronomical Telescopes + Instrumentation},
  year={2018}
}
The Spitzer Space Telescope is executing the ninth year of extended operations beyond its 5.5-year prime mission. The project anticipated a maximum extended mission of about four years when the first mission extension was proposed. The robustness of the observatory hardware and the creativity of the project engineers and scientists in overcoming hurdles to operations has enabled a substantially longer mission lifetime. This has led to more challenges with an aging groundsystem due to resource… 
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