Esprit 120mm ED APO Triplet Refractor Optical Tube - S11420
Sky-Watcher
From ~$3,921.25
2 stores
In stock
The Sky-Watcher Esprit 120mm ED APO Triplet Refractor is a premium apochromatic refractor designed for serious astrophotographers seeking high-contrast, chromatic aberration-free wide-field imaging. Its three-element, air-spaced triplet objective featuring ED glass and proprietary Metallic High-Transmission Coatings delivers exceptional optical performance, while the dual-speed Helinear track focuser provides smooth, zero-shift focusing for critical planetary and deep-sky work. The included 2-element field flattener ensures a flat imaging plane across the entire field, making this scope ideal for both visual observation and long-exposure astrophotography.
Specifications
| Focal ratio | f/7 |
| Length (Dew Shield Extended) | 31.5 in |
| Diagonal Size | 2 |
| Length (Dew Shield Retracted) | 27.34 in |
| Aperture | 120 mm |
| Field Flattener | 2-Element Thread-On |
| Weight | 22 lb |
| Coating Type | Fully Multi-Coated MHTC |
| Focal length | 840 mm |
| Finderscope | 8x50 Right-Angle |
| Focuser Size | 3.4 in |
| Optical design | Triplet Super-Apochromatic ED |
| Camera Adapter | M48 |