Aperture: 89 mm
Effective Focal Length: 1145.6 mm
F-Ratio:  12.87

Details of the optical elements...

R1  -151.403526 
T1  9.500000 
M1  1.518000 
R2  -160.193381 
T2  204.094198 
M2  Air 
R3  -517.167969 
T3  -204.094198 
M3  Air 
R4  -160.193381 
T4  280.000000 
M4  Air