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Table 1.

Mirror properties for M1–M3.

M1 M2 M3
Focal length [mm] 2506.35 519.40 1398.5
Optical footprint for 150″[cm] 144 38.1 27.5
f# 1.7 1.4 5.1
Curvature radius [mm] 5012.70 1039.79 2797.00
Conic constant −1 (parabolic) −0.306 (elliptic) −0.538 (elliptic)

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