SkyWatcher ESPRIT 120EDX APO SkyWatcher Refractor APO Optical Tube
All about the Sky-Watcher Esprit 120EDX Optical Tube
The Sky-Watcher Esprit 120EDX is a high-performance apochromatic refractor telescope designed for the advanced amateur astronomer looking for a professional quality instrument. Belonging to the prestigious ESPRIT series, this optical tube offers performance comparable to high-end equipment, with optics optimized for planetary observation and deep sky astrophotography.
Its triplet apochromatic lens with ED glass from the Japanese brand Hoya ensures exceptional chroma control, achieving images with outstanding contrast and sharpness. Unlike other models, the lens barrel is adjustable, adding extra precision and stability.
Highest quality optics
The use of multi-coating treatments on all optical surfaces drastically reduces light transmission losses. In addition, the exclusive Metallic High-Transmission Coating (MHTC) applied on the air-glass surfaces ensures a transmission of up to 99.5%, providing bright, contrasty images free of internal reflections.
With a diameter of 120 mm, the Esprit 120EDX captures 44% more light than a 100 mm model, making it a very versatile optical tube: ideal for both detailed observation of planets and advanced photography of nebulae, galaxies and star clusters.
Optional field corrector
The optional threaded field corrector includes a large aperture 48 mm doublet that ensures a flat field over the entire image circle, essential for large-format astrophotography with DSLR or CCD/CMOS cameras. Thanks to this corrector, the tube can work at its native f/7 focal length with perfectly sharp stars all the way to the edges of the sensor.
Linear Power 3" 11:1 focusing system
The Esprit 120EDX incorporates the 3" Linear Power focuser, designed to support heavy astrophotography equipment without losing precision.
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Rack and pinion with steel rail and 4 ball bearings for ultra-smooth movement.
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11:1 micrometer reduction for extremely fine focus adjustments.
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360° rotation for easy framing without losing the focus point.
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Graduated scale on the sliding tube to repeat focus positions according to the configuration used.
Robust and precise construction
The optical tube is made entirely of CNC machined aluminum, with no plastic parts, ensuring high durability and mechanical precision. Its interior is completely blackened and equipped with internal baffles that block stray light, further improving contrast in observations and photographs.
It includes oversized attachment collars and a dovetail type Losmandy for solid attachment to any equatorial mount. The retractable sunshield and hard carrying case complete a high-end set, designed to accompany you on every astronomical session.
Technical specifications - Sky-Watcher Esprit 120EDX
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Type: Triplet apochromatic refractor
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Aperture: 120 mm
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Focal length: 840 mm
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Focal ratio: f/7
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ED glass: Hoya FPL-53 (Japan)
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Focuser: Linear Power 3" with 11:1" reduction
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Corrected field: 34 mm (with optional corrector)
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Backfocus: 225 mm (native) - 75 mm (with optional corrector)
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Sunshade: Retractable
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Rotating focuser: Yes, 360°
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Dovetail: Type Losmandy
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Tube weight: 9.6 kg (10.8 kg with accessories)
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Tube length: 710 mm (hood retracted) - 810 mm (extended)
Accessories included in the box
✔ 1x Sky-optical tubeWatcher Esprit 120EDX
✔ 1x Pair of attachment rings
✔ 1x Dovetail type Losmandy
✔ 1x Retractable sunshield
✔ 1x Carrying handle with Synta type finder base
✔ 2x Synta type finder bases
✔ 1x Set of photographic adapters
✔ 1x Rigid carrying case
👉 The Sky-Watcher Esprit 120EDX is one of the best choices for those seeking a large diameter optical tube, precision mechanics and unsurpassed optics for advanced astrophotography and demanding astronomical observation.
SkyWatcher SkyWatcher ESPRIT 120EDX APO Refractor Optical Tube
