9772337

Transmitted wavefront distortion, PV: <λ/8 @ 632.8 nm
Clear Aperture: >12.7
Wedge / Parallelism error: <3 arcmin
Wavelength, nm: 7800
Surface quality, S-D: 60-40
Retardation: λ/4
Retardation tolerance: ±λ/100 @ 20 °C
Material: MgF2
Mount: Ø25.4mm black anodized aluminum mount