Sky-Watcher Esprit 80EDX OTA | PixelSkiesAstro
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Sky-Watcher Esprit 80EDX OTA

Esprit 80EDX — 80/400 triplet apochromat The Esprit 80EDX uses a 80 mm triplet objective with a Ohara FPL-53 ED element and MHTC coatings. Its 400 mm focal length and f/5 optical system are intended for detailed imaging and visual observing with the appropriate accessories.

Manufacturer model: Esprit 80EDX — 80/400 triplet apochromat · Specifications checked against manufacturer data on 2026-11-04

Esprit 80EDX — 80/400 triplet apochromat

The Esprit 80EDX uses a 80 mm triplet objective with a Ohara FPL-53 ED element and MHTC coatings. Its 400 mm focal length and f/5 optical system are intended for detailed imaging and visual observing with the appropriate accessories.

Focusing and camera rotation

A CNC-machined hybrid rack-and-pinion linear-power focuser provides 11:1 fine adjustment and a 2.8-inch indexed drawtube. The main focuser and 360° drawtube adapter rotate independently for camera framing.

Tube, mounting and transport

The aluminium tube is internally baffled and uses a fixed dew shield. CNC aluminium mounting ring(s), a carrying handle and a 45 mm-wide dovetail are supplied. The OTA weighs 3.97 kg and measures 420 mm.

Field correction and accessories

A matched field flattener is optional; the manufacturer specifies a 32 mm image height with it fitted. An aluminium-framed carrying case is supplied. Eyepiece, diagonal and finderscope are not included.

Sky-Watcher manufacturer documentation

Compatibility notes

Exact EDX model checked; 45/75 mm values describe mounting-bar width, not length. Corrected image height applies only with its optional matched flattener. Legacy Esprit package items and camera spacing are not transferred.

SW0509

Data sheet

Aperture (mm)
80
Case
Foam-lined aluminium-framed case
Coatings
Metallic High-Transmission Coatings (MHTC)
Dew shield
Fixed/non-retractable
Dovetail width (mm)
45
Drawtube adapter rotation
360°
Ed glass
Ohara FPL-53
Field flattener included
No; optional accessory
Focal length (mm)
400
Focal ratio
f/5
Focuser
CNC dual-speed 11:1 hybrid rack-and-pinion linear-power
Image height (mm)
32
Image height condition
With optional matched field flattener
Indexed drawtube diameter (in)
2.8
Main focuser rotation
Rotatable independently of drawtube adapter
Model
Esprit 80EDX — 80/400 triplet apochromat
Mounting
CNC aluminium ring(s) and carrying handle/accessory rail
Not included
Eyepiece, star diagonal and finderscope
Optical design
Three-element ED apochromatic refractor
Optional corrector
Matched optional field flattener
OTA length retracted or fixed (mm)
420
OTA weight (kg)
3.97
Tube material
Internally baffled aluminium
Visual adapter (in)
2
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