Translator Disclaimer
12 July 2008 Chandra mission scheduling on-orbit experience
Author Affiliations +
Scheduling observatory time to maximize both day-to-day science target integration time and the lifetime of the observatory is a formidable challenge. Furthermore, it is not a static problem. Of course, every schedule brings a new set of observations, but the boundaries of the problem change as well. As spacecraft ages, its capabilities may degrade. As in-flight experience grows, capabilities may expand. As observing programs are completed, the needs and expectations of the science community may evolve. Changes such as these impact the rules by which a mission scheduled. In eight years on orbit, the Chandra X-Ray Observatory Mission Planning process has adapted to meet the challenge of maximizing day-to-day and mission lifetime science return, despite a consistently evolving set of scheduling constraints. The success of the planning team has been achieved, not through the use of complex algorithms and optimization routines, but through processes and home grown tools that help individuals make smart short term and long term Mission Planning decisions. This paper walks through the processes and tools used to plan and produce mission schedules for the Chandra X-Ray Observatory. Nominal planning and scheduling, target of opportunity response, and recovery from on-board autonomous safing actions are all addressed. Evolution of tools and processes, best practices, and lessons learned are highlighted along the way.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sabina Bucher, Brent Williams, Misty Pendexter, and David Balke "Chandra mission scheduling on-orbit experience", Proc. SPIE 7016, Observatory Operations: Strategies, Processes, and Systems II, 70160W (12 July 2008);


Planning and scheduling at STScI from Hubble to the...
Proceedings of SPIE (August 06 2014)
Arcus: the x-ray grating spectrometer explorer
Proceedings of SPIE (September 30 2016)
The XEUS x-ray telescope
Proceedings of SPIE (June 13 2006)
X-ray multimirror spacecraft: a large telescope
Proceedings of SPIE (October 31 1996)

Back to Top