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We present laboratory results of the closed-loop performance of the MagellanAdaptive Optics (AO) Adaptive Secondary Mirror (ASM), pyramid wavefront sensor(PWFS), and VisAO visible adaptive optics camera. The Magellan AO system is a585-actuator low-emissivity high-throughput system scheduled for first light onthe 6.5 meter Magellan Clay telescope in November 2012. Using a dichroicbeamsplitter near the telescope focal plane, the AO system will be able tosimultaneously perform visible (500-1000 nm) AO science with our VisAO cameraand either 10 micron or 3-5 micron science using either the BLINC/MIRAC4 orCLIO cameras, respectively. The ASM, PWS, and VisAO camera have undergone finalsystem tests in the solar test tower at the Arcetri Institute in Florence,Italy, reaching Strehls of 37% in i'-band with 400 modes and simulatedturbulence of 14 cm ro at v-band. We present images and test results of theassembled VisAO system, which includes our prototype advanced AtmosphericDispersion Corrector (ADC), prototype calcite Wollaston prisms for SDI imaging,and a suite of beamsplitters, filters, and other optics. Our advanced ADCperforms in the lab as designed and is a 58% improvement over conventional ADCdesigns. We also present images and results of our unique Calibration ReturnOptic (CRO) test system and the ASM, which has successfully run in closed- loopat 1kHz. The CRO test is a retro reflecting optical test that allows us to testthe ASM off-sky in close-loop using an artificial star formed by a fibersource.

Status Update and Closed-Loop Performance of the Magellan Adaptive Optics VisAO Camera