ZWO 30F4 Mini Guide Scope
ZWO
ZWO 30F4 Mini Guide Scope is a small guide scope for autoguiding short to moderate focal length imaging rigs.
guide-scope $ Guide scope Guiding Travel kit
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Specifications
Overview
- Guide type
- Guide scope
Optics
- Aperture
- 30 mm
- Focal length
- 120 mm
- Focal ratio
- f/4
- Dawes limit
- 3.87"
Mechanical
- Mounting
- Mini guide-scope finder-style mounting
- Weight
- 250 g
Astrophotography Fit
Best for lightweight wide-field rigs where a compact guide scope is enough.
ZWO 30F4 Mini Guide Scope gives a guide camera its own small optical path so the mount can correct tracking during long exposures. It is simple, light, and effective on wide-field refractors and camera-lens rigs.
The limitation is differential flexure. As focal length rises, or as the main telescope uses a moving mirror, an off-axis guider usually gives more trustworthy corrections.
Best paired with
- Short refractors, camera lenses, and portable GoTo mounts
- Mini guide cameras such as ASI120MM Mini, ASI220MM Mini, or similar
- Rigid rings or dovetail mounting instead of loose finder brackets
Not recommended for
- SCTs, RCs, and long focal length imaging where OAG is safer
- Heavy guide cameras that flex the small focuser
- Trying to correct mount overload or poor balance
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Agena AstroProducts Agena AstroProducts | $99.00 | Out of stock Updated 5/13/2026 | View Offer - $99.00 |
| Astronomics Astronomics | $99.00 | Out of stock Updated 5/13/2026 | View Offer - $99.00 |
| Cloud Break Optics Cloud Break Optics | $99.00 | Out of stock Updated 5/10/2026 | View Offer - $99.00 |