9583408

Center thickness, mm: 2.81 (+/-0.1 mm)
Centration error: <3 arcmin
Clear aperture: >90%
Diameter, mm: 12.7 (+0.0/-0.1 mm)
Edge thickness, mm: 2.0 (+/-0.1 mm)
Focal length, mm: F=+50 (±3%)
Material: FS (Suprasil 300)
Protective chamfers: 0.3 mm x 45°
ROC S1, mm: ROC=+22.85 (+/-0.5 %)
S1 Flatness, PV IR S2 Flatness, PV: λ/[email protected]
S1 Flatness, PV IR S2 Flatness, PV: λ/[email protected]
Surface quality S1/S2, S-D: 20-10