Management Approach

OBSS uses a Principal Investigator (PI) model for management: OBSS stresses cost containment. Realistic requirements will be set to satisfy the baseline science investigation achievable within cost and schedule risk. Clear lines of accountability make a person, not an organization, responsible for each program element. The partnering institutions stress a badgeless team approach, and maintain a systems engineering focus throughout definition, development, and test activities. Frequent and rapid communication using e-mail and teleconferencing ensures coordination of all project elements.

Institutional and individual roles and responsibilities are clearly delineated. Each individual overseeing a project element reports to the PM. Designated System Engineering and Mission Assurance personnel conduct requirements analysis and verification, specialty engineering, and quality assurance activities. Design reviews and safety studies are concurrent with design and fabrication of the instrument, the spacecraft, and processing for launch.

Risk Management

The principal risks for OBSS involve the CCD performance, solar radiation precession, continuous observations and data transmission, and possible spacecraft jitter. Each risk is being aggressively addressed to achieve required performance. In each case any compromise of performance would result in some loss of astrometric or photometric accuracy. With the excellent baseline accuracy, the possibly reduced accuracies would still deliver exciting scientific results. Decisions involving descope options reside solely with the PI acting with the advice of the Science Team and approval of the NASA Midex program office. Descope options include a smaller aperture, a focal plane populated by fewer CCDs, and a reduction in accuracy to 80 microarcseconds for stars brighter than 10th magnitude.

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