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Fig. 6.

image

Simulated long-exposure PSF at 1.6 μm on the scientific arm, where NCPA needs to be compensated by the wavefront offset woff. The images are log-view normalized to the peak. Left: no NCPA correction is applied; the PSF shows signs of static aberrations dominated by astigmatism. Center: NCPA correction is applied with OGTL off (kopt = 1); the NCPA are overcorrected (Fig. 7, top) and static aberration patterns are dimmed but still clear. Right: NCPA correction applied with OGTL active (Fig. 7, bottom); the PSF shows no sign of static aberrations.

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