logging in or signing up jpl zoo1 Callia Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 48 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: November 13, 2007 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Sidestepping Seeing in Antarctica: Sidestepping Seeing in Antarctica James Lloyd California Institute of Technology NSF Center for Adaptive OpticsSite Characteristics: Site Characteristics 10 years of Site Testing Background Seeing Direct Images Tower Microthermal H-DIMM Balloon Microthermal SODAR Marks et al (1999)So What’s the Niche?: So What’s the Niche?Slide5: What’s left after you control the wavefront? Adaptive Optics Narrow Angle Astrometry with Long Baseline InterferometerAdaptive Optics: Adaptive OpticsAdaptive Optics: Adaptive OpticsAdaptive Optics: Adaptive OpticsReal Data: Real DataStrehl Gain: Strehl GainMarechal Approximation: Marechal Approximation Born & Wolf, or Sivaramakrishnan et al (2002) ApJMarechal Approximation: Marechal Approximation Think Fourier Components…Marechal Approximation: Marechal Approximation “Coherent” s2 << 1Marechal Approximation: Marechal Approximation “Incoherent” s2 >> 1Fringe Herding: Fringe HerdingMarechal Approximation: Marechal Approximation Mauna Kea, H band (1.6 mm) Marechal Approximation: Marechal Approximation Mauna Kea, V band (0.5 mm) Interlude: InterludeTurbulence Parameters: Turbulence Parametersr0: r0 s2=1 rad2 T0: T0 s2=1 rad2q0: q0 Coherence Volume: Coherence Volume cT0d0: d0 sd2: sd2 Interferometry: Interferometry Delay Line Beam Combiner Fringe Interferometry: Interferometry Interferometer Fringe Wavefront Phase (Position)Interferometry: Interferometry Interferometer Fringe Wavefront With Fringe TrackerDual Star Interferometer: Dual Star InterferometerDual Star Interferometry: Dual Star Interferometry Interferometer Fringe Wavefront With Fringe TrackerDual Star Interferometer: Dual Star InterferometerTurbulence Theory: Turbulence Theory Astrometric Mean Square Error (Shao & Colavita 1992)Astrometric Science: Astrometric ScienceExtrasolar Planets: Extrasolar PlanetsDifferential Phase: Differential Phase Saumon, D., Hubbard, W. B., Burrows, A., Guillot, T., Lunine, J. I., & Chabrier, G. 1996, ApJ, 460, 993 Differential Phase: Differential Phase Interferometer Fringe Center of LightDifferential Phase: Differential Phase Saumon, D., Hubbard, W. B., Burrows, A., Guillot, T., Lunine, J. I., & Chabrier, G. 1996, ApJ, 460, 993 Results: ResultsSite Comparison: Site ComparisonSite Comparison: Site ComparisonSite Comparison: Site ComparisonSite Comparison: Site ComparisonSite Comparison: Site Comparison $ $$ $$$$ $$ $ $$ $ $$$$ $$ $$$$ $$$$ A New Window t~5 t~0.5Conclusion: Conclusion Killer App is Interferometry One telescope is better than none One telescope is half an interferometer Visible Light AO on a 2-4m class telescope has broad appeal with no competing facility post-HST DMT+AO is a good first step towards a major observatoryLick AO System: Lick AO SystemLick AO System: Lick AO SystemLick AO System: Lick AO System You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
jpl zoo1 Callia Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 48 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: November 13, 2007 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Sidestepping Seeing in Antarctica: Sidestepping Seeing in Antarctica James Lloyd California Institute of Technology NSF Center for Adaptive OpticsSite Characteristics: Site Characteristics 10 years of Site Testing Background Seeing Direct Images Tower Microthermal H-DIMM Balloon Microthermal SODAR Marks et al (1999)So What’s the Niche?: So What’s the Niche?Slide5: What’s left after you control the wavefront? Adaptive Optics Narrow Angle Astrometry with Long Baseline InterferometerAdaptive Optics: Adaptive OpticsAdaptive Optics: Adaptive OpticsAdaptive Optics: Adaptive OpticsReal Data: Real DataStrehl Gain: Strehl GainMarechal Approximation: Marechal Approximation Born & Wolf, or Sivaramakrishnan et al (2002) ApJMarechal Approximation: Marechal Approximation Think Fourier Components…Marechal Approximation: Marechal Approximation “Coherent” s2 << 1Marechal Approximation: Marechal Approximation “Incoherent” s2 >> 1Fringe Herding: Fringe HerdingMarechal Approximation: Marechal Approximation Mauna Kea, H band (1.6 mm) Marechal Approximation: Marechal Approximation Mauna Kea, V band (0.5 mm) Interlude: InterludeTurbulence Parameters: Turbulence Parametersr0: r0 s2=1 rad2 T0: T0 s2=1 rad2q0: q0 Coherence Volume: Coherence Volume cT0d0: d0 sd2: sd2 Interferometry: Interferometry Delay Line Beam Combiner Fringe Interferometry: Interferometry Interferometer Fringe Wavefront Phase (Position)Interferometry: Interferometry Interferometer Fringe Wavefront With Fringe TrackerDual Star Interferometer: Dual Star InterferometerDual Star Interferometry: Dual Star Interferometry Interferometer Fringe Wavefront With Fringe TrackerDual Star Interferometer: Dual Star InterferometerTurbulence Theory: Turbulence Theory Astrometric Mean Square Error (Shao & Colavita 1992)Astrometric Science: Astrometric ScienceExtrasolar Planets: Extrasolar PlanetsDifferential Phase: Differential Phase Saumon, D., Hubbard, W. B., Burrows, A., Guillot, T., Lunine, J. I., & Chabrier, G. 1996, ApJ, 460, 993 Differential Phase: Differential Phase Interferometer Fringe Center of LightDifferential Phase: Differential Phase Saumon, D., Hubbard, W. B., Burrows, A., Guillot, T., Lunine, J. I., & Chabrier, G. 1996, ApJ, 460, 993 Results: ResultsSite Comparison: Site ComparisonSite Comparison: Site ComparisonSite Comparison: Site ComparisonSite Comparison: Site ComparisonSite Comparison: Site Comparison $ $$ $$$$ $$ $ $$ $ $$$$ $$ $$$$ $$$$ A New Window t~5 t~0.5Conclusion: Conclusion Killer App is Interferometry One telescope is better than none One telescope is half an interferometer Visible Light AO on a 2-4m class telescope has broad appeal with no competing facility post-HST DMT+AO is a good first step towards a major observatoryLick AO System: Lick AO SystemLick AO System: Lick AO SystemLick AO System: Lick AO System