Sky-Watcher EDX 100 Super APO Triplet f/5.5 Telescope
- 100mm Objective Lens Diameter
- 840mm Focal Length (f/8.4)
- Three-Element Air-Spaced Apochromatic Triplet
- Premium FPL-53 ED Glass Element
- 3.4-inch Linear-Track Rack-and-Pinion Focuser
The Sky-Watcher Esprit EDX 100 is a high-performance 100mm apochromatic refractor designed for the most demanding astrophotographers. By utilizing a three-element, air-spaced objective lens design, this instrument delivers unrivaled clarity and color correction, rivaling telescopes that cost significantly more.
Each lens assembly is laboratory-matched and includes an extra-low dispersion (ED) element to ensure that false color is completely eliminated. This results in exceptional contrast and sharpness, making the Esprit EDX 100 an elite choice for deep-sky imaging.
The optical design of the 100mm model is built around a Japanese Ohara FPL-53 glass element. This high-index glass is the industry standard for minimizing chromatic aberration, allowing for pinpoint, color-free stars across the entire field.
To further enhance contrast, the interior of the tube is equipped with a series of knife-edge baffles. These precision-placed baffles suppress stray light reflections, ensuring that your images have the jet-black background required for professional-grade astronomical data.
Unlike standard refractors, the Esprit EDX 100 features an overbuilt 3.4-inch linear-track rack-and-pinion focusing system. This exclusive design provides a rock-solid platform that completely eliminates image shift during critical focusing.
With a focal length of 840mm and a native f-ratio of f/8.4, the Esprit EDX 100 is ideal for medium-sized nebulae and galaxy clusters. For those using full-frame sensors, an optional two-element field corrector is available to guarantee a flat field across the entire 44mm imaging plane. This combination of precision mechanics and elite optics makes it a staple for serious astrophotographers.
While the triplet objective provides excellent correction, an optional two-element field flattener is recommended for astrophotography to ensure sharp, round stars across a full 44mm image circle.
The 100mm Esprit EDX uses premium Ohara FPL-53 glass for its ED element, providing superior color correction compared to lower-grade alternatives.
Yes. The 100mm model is upgraded to a massive 3.4-inch linear-track focuser (compared to the 2.7-inch unit on the 70mm), specifically to handle the increased weight of larger imaging accessories.
With a tube weight of 16 pounds, we recommend a medium-duty equatorial mount such as the HEQ5-R or EQ6-R Pro for stable astrophotography.
| SKU | $11435 |
| Optical Design | Apochromatic Triplet Refractor |
| Aperture | 100 mm |
| Focal Length | 840 mm |
| F-Ratio | f/8.4 |
| ED Glass Type | FPL-53 |
| Focuser | 3.4-inch Linear-Track Rack-and-Pinion |
| Image Circle | 44 mm (with optional flattener) |
| Tube Weight | 16 lbs |
| Tube Length | 22.5 inch (Fixed) |
Esprit EDX 100 OTA
× 1
Foam-Lined Hard Case
× 1
Mounting Rings
× 1
D-style Dovetail Plate
× 1