9428132

Centration error: <1 arcmin
Material: UVFS (Corning 7980 0F)
Surface irregularity (spherical surface), PV: <λ/4 @ 632.8 nm
Surface flatness (flat surface), PV: <λ/4 @ 632.8 nm
Surface quality, S-D: 40-20
ROC S1, mm: +22.85
ROC tolerance: <3 fringes
Protective chamfers: 0.1-0.25 mm x 45°
Focal length, mm: +50
Edge thickness, mm: 2 (±0.1)
Dimensions, mm: Ø25.4 (+0/-0.1)
Wavelength, nm: 632.8
Clear Aperture: >90
Center thickness, mm: 5.85 (±0.1)
Coating: uncoated