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MCAO prototype toward ELT (3-8 stars, high Strehl over 2’ in K)

CCD wavefront sensing system for the ESO M ulti-conjugate A daptive Optics D emonstrator (MAD) C.Cavadore , C.Cumani, The ESO-ODT team, F.Franza, E.Marchetti, The ESO AO group European Southern Observatory. MCAO prototype toward ELT (3-8 stars, high Strehl over 2’ in K)

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MCAO prototype toward ELT (3-8 stars, high Strehl over 2’ in K)

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  1. CCD wavefront sensing system for the ESO Multi-conjugate Adaptive Optics Demonstrator (MAD)C.Cavadore, C.Cumani, The ESO-ODT team, F.Franza, E.Marchetti, The ESO AO groupEuropean Southern Observatory • MCAO prototype toward ELT (3-8 stars, high Strehl over 2’ in K) • Visible Wavefront sensors : 5 CCD Marconi 50 • 2 AO correction methods  3 + 2 CCD complete heads • ESO FIERA controller 12 video inputs • CCD Head must be compact • 90x60x40 mm, light : 500g,TEC cooling, vacuum, Embedded micro lens array  New head designs • Mounted on XY stages • Find the star to sense the wavefront • Cable length and stiffness requirements : soft cables • Low noise and high frame rate : <3.5e-, 500Hz • Texp_CCD1 = N* Texp_CCD2 and synchronized Poster #10 Workshop Scientific Detectors for Astronomy June 16-22, 2002 Waimea, Hawai`i

  2. CCD wavefront sensing system for the ESO Multi-conjugate Adaptive Optics Demonstrator (MAD) Micro lens array Pickup mirror 2’ field of view • ESO FIERA system XY stage Soft CCD cables 200 mm Head • Opto-mechanical setup • Shack Hartmann WFS • AO Marconi CCD50 • 4 ports/CCD used • 24 mm pixels Workshop Scientific Detectors for Astronomy June 16-22, 2002 Waimea, Hawai`i

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