The Knowledge Base: My 2025 Industry Wish List
Global Sourcing Spotlight: The Surprising World of Offshore B2B Industrial Values
Nolan’s Notes: Emerging Trends in 2025
Hubble’s Advanced Camera for Surveys Instrument Resumes Science, Investigation Continues
November 9, 2021 | NASAEstimated reading time: 2 minutes
NASA is continuing work to resolve an issue that has suspended science operations on the Hubble Space Telescope. The science instruments entered a safe mode configuration on Oct. 25 after detecting a loss of specific data synchronization messages.
The Hubble team is focusing its efforts to isolate the problem on hardware that commands the instruments and is part of the Science Instrument Command and Data Handling Unit. Specifically, the team is analyzing the circuitry of the Control Unit, which generates synchronization messages and passes them onto the instruments.
While analyzing the Control Unit, the team is working to identify potential workarounds for the issue. These include possible changes to instrument flight software that could check for these lost messages and compensate for them without putting the instruments into safe mode. These workarounds would first be verified using ground simulators to ensure they work as planned.
Over the weekend of Oct. 30, the team prepared to turn on parts of the Near Infrared Camera and Multi Object Spectrometer (NICMOS) instrument to collect data on this issue, allowing the team to determine how frequently this problem occurs. Installed in 1997, NICMOS has been inactive since 2010, when the Wide Field Camera 3 became operational. NICMOS allowed the team to use an instrument to collect information on these lost messages while keeping the active instruments off as a safety precaution. Since NICMOS was recovered on Nov. 1, no additional synchronization messages have been lost.
The team is now taking steps to recover Hubble’s Advanced Camera for Surveys (ACS) instrument from safe mode and start collecting science with that instrument at the beginning of next week. The team will make the decision on Sunday after analyzing the latest data. If a lost message is seen before then, the decision to activate ACS will also be revisited. The team is proceeding cautiously to ensure the safety of the instruments and avoid additional stresses on the hardware. Therefore, only ACS will be used in this capacity next week. ACS was selected as the first instrument to recover as it faces the fewest complications should a lost message occur.
Over the next week, the team will continue analyzing the Control Unit design diagrams and data associated with the lost messages to determine what may have caused this problem. They will also be looking into potential instrument software changes that could help address it. Once the team better understands the frequency of the problem and has determined the time needed to implement possible software changes, they will discuss a plan for returning the other instruments to science operations.
Share on:
Suggested Items
TopLine’s Martin Hart to Present at Microelectronics Reliability and Qualification Workshop (MRQW)
01/16/2025 | TopLine CorporationTopLine Corporation’s Founder and CEO Martin Hart has been invited to deliver a presentation on the topic of how “Braided Solder Columns reduce mechanical stress in large heterogeneous 2.5D advanced packages for space and commercial applications” at The Aerospace Corporation’s Microelectronics Reliability and Qualification Workshop (MRQW) in Los Angeles (El Segundo), California on February 12, 2025.
Merlin Circuit Technology Achieves Prestigious JOSCAR Accreditation
01/14/2025 | Merlin Circuit TechnologyMerlin Circuit Technology is proud to announce it has been awarded the coveted Joint Approvals Group for Industry (JAG) Standard 001 (JOSCAR) accreditation.
Global PCB Connections: The Future of HDI PCBs
01/16/2025 | Jerome Larez -- Column: Global PCB ConnectionsHigh-density interconnect (HDI) printed circuit boards (PCBs) transform modern electronics by providing increased functionality, reduced sizes, and enhanced performance in complex designs. They do so by using advanced techniques, such as finer line and space definitions, microvias, and additional board layers. Specialized via structures—namely blind, buried, and stacked vias—offer complex routing while conserving space. This allows for the development of highly compact electronic devices. This article delves into HDI PCB technology, the function and benefits of blind, buried, and stacked vias, and their impact on PCB performance and design.
NASA’s Kennedy Marks New Chapter for Florida Space Industry
01/09/2025 | NASAThe future of research and technology at NASA’s Kennedy Space Center in Florida is expanding Wednesday, as Kennedy’s center director and charter members in the Florida University Space Research Consortium signed a memorandum of understanding in research and development to assist with missions and contribute to NASA’s Moon to Mars exploration approach.
AST SpaceMobile Secures 45 MHz of Lower Mid-Band Spectrum in the U.S.
01/09/2025 | BUSINESS WIREAST SpaceMobile, Inc., the company building the first and only space-based cellular broadband network accessible directly by everyday smartphones, designed for both commercial and government applications, today announced an agreement for long-term access to up to 45 MHz of lower mid-band spectrum in the United States for direct-to-device satellite applications.