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Advanced Camera for Surveys Anomaly on Hubble Space Telescope

Release date: Mar 1, 2019 8:00 PM (EST)
Advanced Camera for Surveys Anomaly on Hubble Space Telescope

At 8:31 p.m. EST on February 28, 2019, the Advanced Camera for Surveys (ACS) aboard NASA's Hubble Space Telescope suspended operations after an error was detected as the instrument was performing a routine boot procedure. The error indicated that software inside the camera had not loaded correctly. A team of instrument system engineers, flight software experts, and flight operations personnel quickly organized to download and analyze instrument diagnostic information. This team is currently working to identify the root cause and then to construct a recovery plan.

The Full Story
Release date: Mar 1, 2019
Advanced Camera for Surveys Anomaly on Hubble Space Telescope

At 8:31 p.m. EST on February 28, 2019, the Advanced Camera for Surveys (ACS) aboard NASA's Hubble Space Telescope suspended operations after an error was detected as the instrument was performing a routine boot procedure. The error indicated that software inside the camera had not loaded correctly. A team of instrument system engineers, flight software experts, and flight operations personnel quickly organized to download and analyze instrument diagnostic information. This team is currently working to identify the root cause and then to construct a recovery plan.

The telescope continues to operate normally, executing observations with the other three science instruments — the Wide Field Camera 3 (WFC3), the Cosmic Origins Spectrograph (COS), and the Space Telescope Imaging Spectrograph (STIS) — that are all performing nominally. There are no critical observations using the ACS scheduled for the remainder of this week or next week, and the observations that were planned over the next two weeks can be easily rescheduled.

Originally required to last 15 years, Hubble has now been operating for more than 28 years. The final servicing mission in 2009, expected to extend Hubble's lifetime an additional five years, has now produced more than nine years of science observations. During that servicing mission, astronauts repaired the ACS, installed in 2002, after its power supply failed in 2007.

For more information about Hubble, visit http://www.nasa.gov/hubble.