6-DOF Positioning Systems in Space Telescopes: From Alignment to Wavefront Stability

6-DOF Positioning Systems in Space Telescopes

Modern space telescopes are no longer limited by optical design alone. As aperture size increases and wavefront requirements become more stringent, the dominant challenge shifts from designing an ideal optical system to maintaining that system under launch loads, deployment uncertainty, cryogenic cooldown, thermal cycling, structural drift, and long-term orbital operation.

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