Sky-Watcher Evostar 100ED vs Sky-Watcher Evostar 80ED: specs compared
Updated 05 September 2026.
100 mm
Sky-Watcher Evostar 100ED wins on aperture
On aperture, Sky-Watcher Evostar 100ED leads: 100 mm versus 80 mm.
| Spec | Sky-Watcher Evostar 100ED | Sky-Watcher Evostar 80ED |
|---|---|---|
| Aperture | 100 mm (3.94 in) | 80 mm (3.15 in) |
| Focal length | 900 mm | 600 mm |
| Focal ratio | f/9 | f/7.5 |
| Optical design | ED doublet apochromatic refractor | ED doublet apochromatic refractor |
| Focuser / eyepiece barrel | 2 in dual-speed Crayford focuser with a 1.25 in adapter | 2 in dual-speed Crayford focuser with a 1.25 in adapter |
| Mount | Optical tube (Vixen dovetail), no mount supplied | Optical tube (Vixen dovetail), no mount supplied |
| Highest useful magnification (published) | 236x | 189x |
Questions and answers
Which has the higher aperture, Sky-Watcher Evostar 100ED or Sky-Watcher Evostar 80ED?
On aperture, Sky-Watcher Evostar 100ED leads: 100 mm versus 80 mm.
How do Sky-Watcher Evostar 100ED and Sky-Watcher Evostar 80ED compare?
On aperture, Sky-Watcher Evostar 100ED leads: 100 mm versus 80 mm.