9435463

Clear Aperture: >18
Coatings: BBAR on each surface
Material: Quartz + MgF2
Mount: Mounted in 25.4mm diameter mount
Retardation tolerance: ±λ/100 @ 20 °C
Retardation: λ/2
Surface quality, S-D: 40-10
Transmitted wavefront distortion, PV: <λ/10 @ 632.8 nm
Wavelength, nm: 340-560
Wedge / Parallelism error: <30 arcsec