Specifications
EFL (mm): 50
Dia: 25.4
CT: 5
ET: 1.4
R1: 46.3
R2: -46.3
BF: 48.3
V1H1: 1.7
Specifications: Effective Focal Length (EFL): +- 1%
Diameter (DIA): +- .18
Clear Aperture: 90% of diameter
Center Thickness (CT): +- .25
Cosmetics: 60/40
Surface Quality: 2 ½ x ½ waves @ 546.1nm
Centering Accuracy: 2 arc minutes TIA
Designed Wavelength: 546.1nm