Tomographic phase diversity for non-common path ... - AO4ELT 2

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Example of preliminary SHWFS + tomography AO4ELTs2, Victoria/Canada, September 26-30, 2011 Wednesday, 28 September 11 4
NCPA issues for wide field systems Impossibility to compensate for anything that’s not occuring close to the DM altitude ! Beware optical designers Need to multiplex for efficient/quick convergence MCAO: funky effects induced by WFSs differential aberrations (finite range, off-axis LGS sources). Lead to non tomographic error. Funny reconstruction MCAO tips and tricks: Filtering of quadratics General note: Zernikes are well known, but bad when considering N>~80 due to extreme edge slopes. A good replacement are KL or Disk Harmonic OSA, AO Session, Toronto, July 10-14, 2011 Wednesday, 28 September 11 5
Page 1 and 2: Tomographic phase diversity for non
Page 3: NCPA initial approach for GeMS Mult
Page 7 and 8: “Classical” PD 2D-phase PSF Vib
Page 9 and 10: Tomographic PD ≠ PD + Tomography
Page 11 and 12: Pray GUI OSA, AO Session, Toronto,
Page 13 and 14: OPRA OPRA = Otf-based Phase Retriev
Page 15 and 16: Wednesday, 28 September 11 15
Page 17 and 18: Some quantitative results on sim. d

Tomographic phase diversity for non-common path ... - AO4ELT 2

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