Palm-3000: Exoplanet Adaptive Optics for the 5-meter Hale Telescope


We describe and report first results from PALM-3000, the second-generation astronomical adaptive optics facility for the 5.1-m Hale telescope at Palomar Observatory. PALM-3000 has been engineered for high-contrast imaging and emission spectroscopy of brown dwarfs and large planetary mass bodies at near-infrared wavelengths around bright stars, but also supports general natural guide star use to V ≈ 17. Using its unique 66 × 66 actuator deformable mirror, PALM-3000 has thus far demonstrated residual wavefront errors of 141 nm RMS under ∼1 seeing conditions. PALM-3000 can provide phase conjugation correction over a 6. 4 × 6. 4 working region at λ = 2.2 μm, or full electric field (amplitude and phase) correction over approximately one half of this field. With optimized back-end instrumentation, PALM-3000 is designed to enable 10 contrast at 1 angular separation, including post-observation speckle suppression processing. While optimization of the adaptive optics system is ongoing, we have already successfully commissioned five back-end instruments and begun a major exoplanet characterization survey, Project 1640, with our partners at American Museum of Natural History and Jet Propulsion Laboratory. Subject headings: instrumentation: adaptive optics—planets and satellites: detection—techniques: high angular resolution—techniques: imaging spectroscopy—atmospheric effects— minor planets, asteroids: individual (Ganymede)

11 Figures and Tables

Cite this paper

@inproceedings{Dekany2013Palm3000EA, title={Palm-3000: Exoplanet Adaptive Optics for the 5-meter Hale Telescope}, author={Richard G. Dekany and Jennifer E. Roberts and Rick S. Burruss and Antonin H. Bouchez and Tuan N. Truong and Christoph Baranec and Stephen Guiwits and David Hale and John Angione and Thang Trinh and Jeffry Zolkower and Julia C Shelton and Dean L. Palmer and John R. Henning and Ernest Croner and Mitchell Troy and Dan McKenna and Jonathan A. Tesch and S. Hildebrandt and Jennifer Milburn}, year={2013} }