Hubble Space Telescope Kathryn Whitmire 10/25/13
2.4m (7.9ft) aperture telescope Low Earth Orbit Ranges from near infrared to near ultraviolet Largest and most versatile Due to de-orbit 2016-2021 What is it?
What happened first • Multiple delays • Technical • Budget • Challenger explosion • Launched April 24, 1990
What happened second • Pictures sent back blurry
NASA Analysis • Mirror had spherical aberration • Flat by 2.2 micrometers • New null corrector not set up correctly by stressed worker
NASA Analysis cont. • Testing used both RvNC and RNC • RvNC showed error, but dismissed • Of course the newer model was right, it was made for this
Solution • To be continued next time…
References • Wikipedia • http://en.wikipedia.org/wiki/Hubble_Space_Telescope • NASA, “The Hubble Space Telescope Optical Systems Failure Report”. November 1990. • http://www.ssl.berkeley.edu/~mlampton/AllenReportHST.pdf