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The Magellan Adaptive Secondary AO system, scheduled for first light in thefall of 2011, will be able to simultaneously perform diffraction limited AOscience in both the mid-IR, using the BLINC/MIRAC4 10\{mu}m camera, and in thevisible using our novel VisAO camera. The VisAO camera will be able to operateas either an imager, using a CCD47 with 8.5 mas pixels, or as an IFS, using acustom fiber array at the focal plane with 20 mas elements in its highestresolution mode. In imaging mode, the VisAO camera will have a full suite offilters, coronagraphic focal plane occulting spots, and SDI prism/filters. Theimaging mode should provide ~20% mean Strehl diffraction-limited images overthe band 0.5-1.0 \{mu}m. In IFS mode, the VisAO instrument will provide R~1,800spectra over the band 0.6-1.05 \{mu}m. Our unprecedented 20 mas spatiallyresolved visible spectra would be the highest spatial resolution achieved todate, either from the ground or in space. We also present lab results from ourrecently fabricated advanced triplet Atmospheric Dispersion Corrector (ADC) andthe design of our novel wide-field acquisition and active optics lens. Theadvanced ADC is designed to perform 58% better than conventional doublet ADCsand is one of the enabling technologies that will allow us to achieve broadband(0.5-1.0\{mu}m) diffraction limited imaging and wavefront sensing in thevisible.

The Magellan Adaptive Secondary VisAO Camera: Diffraction- Limited Broadband Visible Imaging and 20mas Fiber Array IFS