Sky-Watcher Esprit 120ED
Sky-Watcher
Sky-Watcher Esprit 120ED is a 120 mm Triplet ED APO refractor for deeper refractor imaging, smaller galaxies, and high-quality visual observing.
Best Current Offer
Other retailers
- $4,165.00
Astronomics (Out of stock)
Specifications
Optics
- Optical design
- Triplet ED APO refractor
- Aperture
- 120 mm
- Focal length
- 840 mm
- Focal ratio
- f/7
- Dawes limit
- 0.97"
- Glass / elements
- Air-spaced triplet ED APO
Imaging
- Camera format
- APS-C / full-frame depending on flattener setup
- Full-frame coverage
- Yes
- Back focus
- 75 mm
- Corrected field
- Included field flattener
- Reducer / flattener
- Optional 0.77× reducer: ~647 mm at f/5.4
Mechanical
- Focuser
- 3.4-inch dual-speed Helinear rack-and-pinion focuser
- Weight
- 10 kg / 22 lb
Astrophotography Fit
Best for deeper refractor imaging, smaller galaxies, and high-quality visual observing when the mount, camera format, and correction hardware are chosen as one system.
Sky-Watcher Esprit 120ED sits in the telescope slot for deeper refractor imaging, smaller galaxies, and high-quality visual observing. The useful headline specs are aperture 120 mm, focal length 840 mm, f/7.
Camera coverage: APS-C / full-frame depending on flattener setup. Back focus: 75 mm.
Refractors keep the field routine calmer: no regular collimation, predictable cooldown, and a clean path to autofocus and filtered imaging. The tradeoff is aperture and reach.
Weight matters here: 10 kg / 22 lb. Leave payload headroom for the camera, guider, focuser, dew control, and cables instead of judging the mount by bare tube weight alone.
Best paired with
- Corrected field flattener or reducer when the design requires one
- Cooled APS-C or smaller astro cameras matched to the image circle
- Autofocus, guide scope or OAG, and a mount with comfortable payload margin
Not recommended for
- Large full-frame sensors unless the corrected field supports them
- Very small travel mounts near their realistic imaging payload limit
- Buyers expecting one telescope to be ideal for every target size
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Starizona Starizona | $129,900.00 | In stock Updated 8/5/2026 | View Offer - $129,900.00 |
| Astronomics Astronomics | $4,165.00 | Out of stock Updated 8/5/2026 | View Offer - $4,165.00 |
Price History
Chronological retailer pricing with out-of-stock points shown at reduced opacity.