Clear Aperture
180 mm
Focal Length
1080 mm
Material
Optical crown and flint glasses
Structure
Air-spaced doublet
Color Correction
Achromatic
Surface Quality
(not worse) 60-40 scratch & dig
Surface Accuracy
(not worse) λ/2 P-V at 632.8nm
Coating
Multilayer broadband Anti-reflection Coating
Weight
3.17 kg
Size:
Achromatic 80mm F/6.25
Achromatic 150mm F/8
Achromatic 203mm F/9
Achromatic 203mm F/6
Achromatic 220mm F/12
Individual and wholesale orders are welcome.
Note: special size and coating are available upon request.
