Precision alignment of off-axis parabolic (OAP) mirror with goniometric mount: laboratory demonstration in the G-CLEF @ Magellan front end

Le résumé fourni par la source

Off-axis parabolic mirrors (OAPs) deliver achromatic, diffraction-limited, unobscured relays, making them ideal for a wide range of applications, but their alignment is notoriously difficult, as beam pointing and focus are strongly coupled. Concentric OAP mounts have been proposed conceptually to address this, but without an instrument-level implementation. We present the design, manufacture, and laboratory validation of a goniometric mount that references the OAP to its parent paraboloid, giving a single arc-slide degree of freedom that steers the collimated beam without disturbing focus while suppressing clocking. We characterize the mounts on an optical bench and validate a two-OAP relay delivering diffraction-limited, telecentric injection. The mounts will be deployed in the seeing-limited front end of the G-CLEF spectrograph at the Magellan telescope, where dual 30° OAP relays convert F/11 to F/3.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.