反射鏡

2"增強鋁膜平面反射鏡

Model: BM20
Diameter: 50.8+0/-0.1 mm
Thickness: 9.5±0.2 mm
Clear Aperture: >80%
S1:    Surface Flatness: λ/10 @ 633 nm
Surface Quality: 60-40
Coating Type: VIS Enhanced Aluminum
Ravg > 93% from 450 to 750nm
S2:    Ground