TS-Optics Riccardi 1.0× 3-inch Newtonian coma corrector This three-element, three-group Riccardi/Wynne corrector is designed for Newtonian imaging at 1.0× scale, for f/3–f/6 telescopes. TS specifies a focus position 150 mm above the tube.
Manufacturer model: TS-Optics Riccardi 1.0× 3-inch Newtonian coma corrector · Specifications checked against manufacturer data on 2026-11-04
This three-element, three-group Riccardi/Wynne corrector is designed for Newtonian imaging at 1.0× scale, for f/3–f/6 telescopes. TS specifies a focus position 150 mm above the tube.
The telescope side uses a 76.2 mm barrel and M72 × 0.75 male thread. The camera side has an M68 × 1 male thread, 4 mm long.
Sensor spacing is 65 mm from the rear lens surface or 64.5 mm from the M68 thread reference. Body length is 99 mm excluding that thread. TS specifies full illumination to 45 mm and 90% illumination to 55 mm diameter, with correction to 55 mm.
TS-Optics manufacturer documentation
Exact named TS manufacturer model and its published technical table checked. Unpublished dimensions, capacities and package items are not inferred.
| Body length | 99 mm excluding M68 male thread |
|---|---|
| Sensor spacing | 65 mm from rear lens surface; 64.5 mm from M68 thread |
| Illumination | 100% to 45 mm; 90% to 55 mm diameter |
| Corrected field | Up to 55 mm diameter |
| Supported newtonian focal ratios | f/3–f/6 |
| Required focus position | 150 mm above tube |
| Riccardi model examples lens to sensor (mm) | 250 mm f/4: 64; 250 mm f/5: 64.4; 300 mm f/4: 65; 300 mm f/5: 65.2; 400 mm f/4.5: 65.8 |
Data sheet
Specific References
TS-Optics Riccardi 1.0× 3-inch Newtonian coma corrector This three-element, three-group Riccardi/Wynne corrector is designed for Newtonian imaging at 1.0× scale, for f/3–f/6 telescopes. TS specifies a focus position 150 mm above the tube.
Manufacturer model: TS-Optics Riccardi 1.0× 3-inch Newtonian coma corrector · Specifications checked against manufacturer data on 2026-11-04
