9378887

Center thickness, mm: 6
Centration error: <3 arcmin
Clear aperture: >90
Coatings: uncoated
Dimensions tolerance, mm: (+0/-0.1)
Dimensions, mm: Ø25.4
Focal length, mm: -3880
Material: BK7
Protective chamfers: <0.25 mm x 45°
S1 Flatness, PV IR S2 Flatness, PV: <λ/4 @ 632.8 nm
Surface quality, S-D: 40-20
Thickness tolerance, mm: ±0.1