ZWO Off-Axis Guider
ZWO
ZWO Off-Axis Guider is a small guide scope for autoguiding short to moderate focal length imaging rigs.
Best Current Offer
Specifications
Overview
- Guider type
- Off-axis guider
Mechanical
- Format
- Compact OAG
- Back focus
- 17.5 mm
Use
- Primary use
- Guiding through the main imaging telescope to eliminate guide-scope flexure
Astrophotography Fit
Best for lightweight wide-field rigs where a compact guide scope is enough.
ZWO Off-Axis Guider 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 | $128.00 | In stock Updated 5/15/2026 | View Offer - $128.00 |
| Astronomics Astronomics | $128.00 | In stock Updated 5/14/2026 | View Offer - $128.00 |
| Cloud Break Optics Cloud Break Optics | $128.00 | In stock Updated 5/10/2026 | View Offer - $128.00 |
| High Point Scientific High Point Scientific | $128.00 | In stock Updated 5/15/2026 | View Offer - $128.00 |
| Mile High Astronomy Mile High Astronomy | $128.00 | In stock Updated 5/13/2026 | View Offer - $128.00 |
| Starizona Starizona | $128.00 | In stock Updated 5/15/2026 | View Offer - $128.00 |
| Telescopes.net Telescopes.net | $128.00 | In stock Updated 5/13/2026 | View Offer - $128.00 |
| ZWO USA ZWO USA | $128.00 | In stock Updated 5/15/2026 | View Offer - $128.00 |
Price History
Chronological retailer pricing with out-of-stock points shown at reduced opacity.