Celestron Omni XLT 120 vs Celestron StarSense Explorer 8-inch Dobsonian: specs compared
Updated 05 September 2026.
203 mm
Celestron StarSense Explorer 8-inch Dobsonian wins on aperture
On aperture, Celestron StarSense Explorer 8-inch Dobsonian leads: 203 mm versus 120 mm.
| Spec | Celestron Omni XLT 120 | Celestron StarSense Explorer 8-inch Dobsonian |
|---|---|---|
| Aperture | 120 mm (4.72 in) | 203 mm (7.99 in) |
| Focal length | 1000 mm | 1200 mm |
| Focal ratio | f/8.3 | f/5.9 |
| Optical design | Achromatic refractor | Newtonian reflector (parabolic primary) |
| Focuser / eyepiece barrel | 1.25 in and 2 in focuser (2 in visual back with 1.25 in adapter) | 2 in Crayford focuser with a 1.25 in adapter |
| Mount | CG-4 German equatorial | Manual Dobsonian base (StarSense phone dock) |
| Highest useful magnification (published) | 283x | 480x |
Questions and answers
Which has the higher aperture, Celestron Omni XLT 120 or Celestron StarSense Explorer 8-inch Dobsonian?
On aperture, Celestron StarSense Explorer 8-inch Dobsonian leads: 203 mm versus 120 mm.
How do Celestron Omni XLT 120 and Celestron StarSense Explorer 8-inch Dobsonian compare?
On aperture, Celestron StarSense Explorer 8-inch Dobsonian leads: 203 mm versus 120 mm.