OTA · 2022–
Vixen VSD90SS
Key specifications
| Aperture | 90 mm |
|---|---|
| Focal length | 495 mm |
| Focal ratio | f/5.5 |
| Optical design | Other |
| Weight | 4.3 kg |
All specifications
| Lens coating | AS Coating |
|---|---|
| Focuser type | Rack & pinion |
About
90mm f/5.5 five-element/five-group apochromatic astrograph (twin SD lenses + correctors); flagship flat-field imaging refractor, successor to the VSD100F3.8.