Fig. 1
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Focal-plane images simulated at two different wavelengths: Hα = 656 nm and K band = 2200 nm. From left to right: diffraction limited PSF; PSF with NCPAs of WFECPA ≈ 50 nm RMS; PSFs with AO residual WFEAO ≈ 100 nm RMS; PSFs with AO residuals and NCPAs.The Strehl ratio (SR) is calculated using Szapiel (1983); Ross (2009). The NCPA effect is clearly stronger at the shorter Hα wavelength.
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