SVBONY SV209 Field Flattener
Buy on Amazon
The SVBONY SV209 is a 0.8x focal reducer and field flattener designed specifically for the SV550 APO 122mm refractor telescope, correcting field curvature while simultaneously widening the field of view. It is a practical dual-purpose accessory that helps astrophotographers achieve sharper, more uniformly illuminated images across the full sensor frame. Overall, it offers solid optical performance and targeted compatibility at a competitive price point within the amateur astrophotography market.
Key Features & Specs
| Magnification | 0.8x focal reduction, effectively shortening focal length and increasing field of view |
|---|---|
| Compatibility | Designed specifically for the SVBONY SV550 APO 122mm refractor telescope |
| Function | Corrects field curvature and vignetting for sharper stars across the entire image frame |
| Connection | Threaded M48 connection interface for secure attachment to camera and focuser |
| Construction | Metal barrel construction with multi-coated optical elements to reduce reflections and improve light transmission |
| Use Case | Optimized for astrophotography with DSLRs and dedicated astronomy cameras |
| Category | Field Flatteners and Reducers, Telescope Optical Accessories |
Best for: Amateur and intermediate astrophotographers who own the SVBONY SV550 APO 122mm refractor and want to improve edge-of-frame sharpness and capture a wider field of view in a single, affordable accessory.