Specifications
EFL (mm): 184.8
Dia: 52
CT: 6
MATERIAL: S-TIH53
ET: 3.5
BF: 175.7
R1: 55.9
V1H1: -6.1
R2: 82.7
V2H2: -9.1
D: 171.5
Specifications: Effective Focal Length (EFL): +/- 1%
Diameter (DIA): +0/- .18
Clear Aperture: 90% of diameter
Center Thickness (CT): +/- .25
Cosmetics: 60/40
Surface Quality: 2 1/2 X 1/2 waves @ 546.1nm
Centering Accuracy: 2 arc minutes TIA
Designed Wavelength: 587.1nm
All dimensions are in millimeters.