OTA · 2017–2024
Coronado SolarMax III 70
Key specifications
| Aperture | 70 mm |
|---|---|
| Focal length | 400 mm |
| Focal ratio | f/5.7 |
| Optical design | Achromatic Refractor |
All specifications
| Lens coating | FMC |
|---|---|
| Focuser type | Dual-speed R&P |
| Dovetail | Vixen |
About
70mm f/5.7 dedicated hydrogen-alpha solar refractor with a 60mm external 'True' etalon, RichView + T-Max tuning, and a 2" dual-speed rack-and-pinion focuser. Available single-stack (<0.7 A) or double-stack (<0.5 A), with BF10 or BF15 blocking filters.