Orion SkyQuest XT8 Classic Dobsonian vs Orion SpaceProbe 130ST: 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 130 mm.
| Spec | Orion SkyQuest XT8 Classic Dobsonian | Orion SpaceProbe 130ST |
|---|---|---|
| Aperture | 203 mm (7.99 in) | 130 mm (5.12 in) |
| Focal length | 1200 mm | 650 mm |
| Focal ratio | f/5.9 | f/5 |
| Optical design | Newtonian reflector (parabolic primary) | Newtonian reflector (parabolic primary) |
| Focuser / eyepiece barrel | 2 in Crayford focuser with a 1.25 in adapter | 1.25 in rack-and-pinion focuser |
| Mount | Manual Dobsonian base | EQ-2 German equatorial |
| Highest useful magnification (2x aperture rule) | about 406x | about 260x |
Questions and answers
Which has the higher aperture, Orion SkyQuest XT8 Classic Dobsonian or Orion SpaceProbe 130ST?
On aperture, Orion SkyQuest XT8 Classic Dobsonian leads: 203 mm versus 130 mm.
How do Orion SkyQuest XT8 Classic Dobsonian and Orion SpaceProbe 130ST compare?
On aperture, Orion SkyQuest XT8 Classic Dobsonian leads: 203 mm versus 130 mm.