Sky-Watcher Evostar 100ED
Sky-Watcher
Sky-Watcher Evostar 100ED is a 100 mm ED doublet APO refractor for general deep-sky imaging and visual observing.
Best Current Offer
Specifications
Optics
- Optical design
- ED doublet APO refractor
- Aperture
- 100 mm
- Focal length
- 900 mm
- Focal ratio
- f/9
- Dawes limit
- 1.16"
- Glass / elements
- Schott glass and FPL-53 ED element
Specifications
- Focuser
- 2 inch dual-speed Crayford-style
- Weight
- 6.6 lb (2.99 kg)
Imaging
- Camera format
- APS-C / Micro 4/3 with matching flattener
- Full-frame coverage
- No
- Back focus
- Requires field flattener/reducer spacing for imaging
Astrophotography Fit
Best for general deep-sky imaging and visual observing when the mount, camera format, and correction hardware are chosen as one system.
Sky-Watcher Evostar 100ED sits in the telescope slot for general deep-sky imaging and visual observing. The useful headline specs are aperture 100 mm, focal length 900 mm, f/9.
Camera coverage: APS-C / Micro 4/3 with matching flattener. Back focus: Requires field flattener/reducer spacing for imaging.
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.
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 |
|---|---|---|---|
| High Point Scientific High Point Scientific | $1,249.95 | In stock Updated 5/13/2026 | View Offer - $1,249.95 |
| Astronomics Astronomics | $1,255.00 | In stock Updated 5/15/2026 | View Offer - $1,255.00 |
| Cloud Break Optics Cloud Break Optics | $1,255.00 | In stock Updated 5/11/2026 | View Offer - $1,255.00 |
| Starizona Starizona | $1,255.00 | In stock Updated 5/11/2026 | View Offer - $1,255.00 |