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As we enter the era of TESS and JWST, instrumentation that can carry outradial velocity measurements of exoplanet systems is in high demand. We willaddress this demand by upgrading the UC Lick Observatory's 2.4-meter AutomatedPlanet Finder (APF) telescope with an adaptive optics (AO) system. The AOupgrade will be directly integrated into the APF telescope by replacing thetelescope's static secondary mirror with a 61-actuator adaptive secondarymirror (ASM) to minimize the disturbance to the spectrograph optics. Thisupgrade is enabled by The Netherlands Organization for Applied ScientificResearch's (TNO) large-format deformable mirror technology, which will beconstructed using a new style of high-efficiency hybrid-variable reluctanceactuator. We outline the technical design and manufacturing plan for theproposed APF AO upgrade and simulate the improvement to the science yield usingHCIpy. Our simulations predict the AO upgrade will reduce the PSF instabilitiesdue to atmospheric turbulence, concentrating the light on the spectrograph slitby a multiplicative factor of more than two (doubling the telescope's observingefficiency) for targets as dim as I = 14. When completed, the APF adaptivesecondary mirror will be among the first pairings of an ASM with a radialvelocity spectrograph and become a pathfinder for similar AO systems intelescopes of all sizes.

An adaptive optics upgrade for the Automated Planet Finder Telescope using an adaptive secondary mirror