OTA · 1988–1999
Vixen FL-80S
Key specifications
| Aperture | 80 mm |
|---|---|
| Focal length | 640 mm |
| Focal ratio | f/8 |
| Optical design | Fluorite Doublet |
About
80mm f/8 fluorite (CaF2) Steinheil doublet apochromatic refractor; the celebrated mid-size of the classic FL series.