OTA · 2013–
Takahashi FC-100DC
Key specifications
| Aperture | 100 mm |
|---|---|
| Focal length | 740 mm |
| Focal ratio | f/7.4 |
| Optical design | Fluorite Doublet |
About
100 mm fluorite Steinheil doublet apochromat, 740 mm focal length at f/7.4. Rear-element fluorite with eco-glass front; the lightest 4-inch in the line, optimized for visual use with imaging support via dedicated correctors.