Sky-Watcher Flextube 300P (12-inch Dobsonian) vs Sky-Watcher Skymax 180: specs compared
Updated 05 September 2026.
305 mm
Sky-Watcher Flextube 300P (12-inch Dobsonian) wins on aperture
On aperture, Sky-Watcher Flextube 300P (12-inch Dobsonian) leads: 305 mm versus 180 mm.
| Spec | Sky-Watcher Flextube 300P (12-inch Dobsonian) | Sky-Watcher Skymax 180 |
|---|---|---|
| Aperture | 305 mm (12.01 in) | 180 mm (7.09 in) |
| Focal length | 1500 mm | 2700 mm |
| Focal ratio | f/4.9 | f/15 |
| Optical design | Newtonian reflector (parabolic primary, collapsible) | Maksutov-Cassegrain |
| Focuser / eyepiece barrel | 2 in Crayford focuser with a 1.25 in adapter | supplied with a 2 in diagonal and a 1.25 in adapter; rear thread accepts 1.25 in or 2 in visual backs |
| Mount | Manual collapsible Dobsonian base | Optical tube (V-style dovetail), no mount supplied |
| Highest useful magnification (2x aperture rule) | about 610x | about 360x |
Questions and answers
Which has the higher aperture, Sky-Watcher Flextube 300P (12-inch Dobsonian) or Sky-Watcher Skymax 180?
On aperture, Sky-Watcher Flextube 300P (12-inch Dobsonian) leads: 305 mm versus 180 mm.
How do Sky-Watcher Flextube 300P (12-inch Dobsonian) and Sky-Watcher Skymax 180 compare?
On aperture, Sky-Watcher Flextube 300P (12-inch Dobsonian) leads: 305 mm versus 180 mm.