TY - RPRT TI - Active figure maintenance control using an optical truss laser metrology system for a space-based far-IR segmented telescope AU - Lau, Kenneth AU - Breckenridge, Bill AU - Nerheim, Noble AU - Redding, David PY - 1992 UR - https://ntrs.nasa.gov/citations/19930050284 ID - 19930050284 ER -