Specifications
EFL (mm): 189.1
Dia: 25.4
CT: 2.8
MATERIAL: BK 7
ET: 3.5
BF: 189.2
R1: 1079.9
V1H1: -1.8
R2: 107.53
V2H2: -0.2
D: -190
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.