Orion SkyQuest XT8 Classic Dobsonian vs Sky-Watcher Classic 150P (6-inch Dobsonian): specs compared
Updated 05 September 2026.
203 mm
Orion SkyQuest XT8 Classic Dobsonian wins on aperture
On aperture, Orion SkyQuest XT8 Classic Dobsonian leads: 203 mm versus 152 mm.
| Spec | Orion SkyQuest XT8 Classic Dobsonian | Sky-Watcher Classic 150P (6-inch Dobsonian) |
|---|---|---|
| Aperture | 203 mm (7.99 in) | 152 mm (5.98 in) |
| Focal length | 1200 mm | 1200 mm |
| Focal ratio | f/5.9 | f/7.9 |
| Optical design | Newtonian reflector (parabolic primary) | Newtonian reflector (parabolic primary) |
| Focuser / eyepiece barrel | 2 in Crayford focuser with a 1.25 in adapter | 2 in Crayford focuser with a 1.25 in adapter |
| Mount | Manual Dobsonian base | Manual Dobsonian base |
| Highest useful magnification (2x aperture rule) | about 406x | about 304x |
Questions and answers
Which has the higher aperture, Orion SkyQuest XT8 Classic Dobsonian or Sky-Watcher Classic 150P (6-inch Dobsonian)?
On aperture, Orion SkyQuest XT8 Classic Dobsonian leads: 203 mm versus 152 mm.
How do Orion SkyQuest XT8 Classic Dobsonian and Sky-Watcher Classic 150P (6-inch Dobsonian) compare?
On aperture, Orion SkyQuest XT8 Classic Dobsonian leads: 203 mm versus 152 mm.