OTA · 2016–
Takahashi FSQ-106EDX4
Key specifications
| Aperture | 106 mm |
|---|---|
| Focal length | 530 mm |
| Focal ratio | f/5 |
| Optical design | Quadruplet APO |
About
106 mm modified-Petzval ED quadruplet astrograph, 530 mm focal length at f/5. Dual-ED four-element design with a native flat field over an 88 mm image circle (9.5° field); the workhorse of Takahashi's imaging refractor line.