iOptron iGuider Mini Guide Scope — 30 mm, 120 mm f/4 The iOptron iGuider mini guiding scope (#3361) is a compact 30 mm, 120 mm focal-length guide scope with dielectric anti-reflection-coated achromatic optics, designed for autoguiding with short to medium focal-length telescopes.
Manufacturer model: iOptron iGuider mini Guiding Scope (#3361) · Specifications checked against manufacturer data on 2026-11-03
The iOptron iGuider mini guiding scope (#3361) is a compact 30 mm, 120 mm focal-length guide scope with dielectric anti-reflection-coated achromatic optics, designed for autoguiding with short to medium focal-length telescopes.
The scope mates with iOptron CEM26, GEM28, CEM40 and GEM45 mounts without an adapter, using the two M3 holes (30 mm apart) on the side of the later 6-inch Vixen/Losmandy dual saddle. It also has a standard 19 mm finder-style dovetail, so it fits any telescope with a finder-scope slot.
The scope accepts a 1.25-inch guide camera. Paired with iOptron's iGuider 1 camera (sold separately or as the #3360 iGuider system), it gives a guiding resolution of 6.44 arcseconds per pixel.
| Manufacturer part number | 3361 |
|---|---|
| Aperture | 30 mm |
| Focal length | 120 mm |
| Focal ratio | f/4 |
| Optics | Achromatic doublet, dielectric AR coating |
| Camera connection | 1.25-inch |
| Dovetail | 19 mm finder-style |
| Saddle mounting | 2 × M3, 30 mm apart (iOptron 6-inch dual saddle) |
| Compatible iOptron mounts | CEM26, GEM28, CEM40, GEM45 |
iOptron iGuider mini guiding scope · iGuider system manual
Scope only (#3361), not the #3360 system with iGuider 1 camera. Published 200 g weight includes camera, so not stated. Direct mount needs saddle with 2xM3 holes 30 mm apart (later CEM40/GEM45).
| Dovetail (mm) | 19 |
|---|---|
| Saddle mounting | 2 x M3, 30 mm apart |
| Resolution with iguider1 | 6.44 arcsec/pixel |
Data sheet
Specific References
iOptron iGuider Mini Guide Scope — 30 mm, 120 mm f/4 The iOptron iGuider mini guiding scope (#3361) is a compact 30 mm, 120 mm focal-length guide scope with dielectric anti-reflection-coated achromatic optics, designed for autoguiding with short to medium focal-length telescopes.
Manufacturer model: iOptron iGuider mini Guiding Scope (#3361) · Specifications checked against manufacturer data on 2026-11-03
