Specifications
EFL (mm): -173.9
Dia (mm): 12
CT (mm): 4
ET (mm): 4.1
BF (mm): -176.1
V1H1: 0
V2H2: -2.2
Material: S-TIH11
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: 546.1nm
All dimensions are in millimeters.