Table 2: APLC optimization for an obscuration of 30%.
Parameters Value range Optimal APLC configuration (FPM range in $\lambda /D$)
Obscuration 30% 4.7
Spider (arm) 3-7 4.6-4.8
Spider (size) 15-90 cm 4.6-4.8
Shear pupil 0.5-2% 4.7-4.9
Segment reflectivity 0.25-5% 4.5-4.7
Low-order aberrations 1-100 nm rms 3.5-6.0
Chromatism ( $\Delta \lambda \slash \lambda$) 1.4-5% 4.7-4.8
Chromatism ( $\Delta \lambda \slash \lambda$) 5-20% 4.8-5.3

Source LaTeX | All tables | In the text