OTA · 1990–1999
Vixen FL-90S
Key specifications
| Aperture | 90 mm |
|---|---|
| Focal length | 810 mm |
| Focal ratio | f/9 |
| Optical design | Fluorite Doublet |
| Weight | 3.5 kg |
About
90mm f/9 fluorite (CaF2) Steinheil doublet apochromatic refractor from the classic FL series.
OTA · 1990–1999
| Aperture | 90 mm |
|---|---|
| Focal length | 810 mm |
| Focal ratio | f/9 |
| Optical design | Fluorite Doublet |
| Weight | 3.5 kg |
90mm f/9 fluorite (CaF2) Steinheil doublet apochromatic refractor from the classic FL series.