SVBONY SV238 Off-Axis Guider
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The SVBONY SV238 is a compact off-axis guider designed for astrophotographers who want precise autoguiding without adding a separate guide scope to their imaging train. It features a large 8x14mm prism that captures enough starlight for reliable guiding even with shorter focal length telescopes. Overall it offers a solid, machined build with versatile threading options at a price point that makes OAG accessible to intermediate imagers.
Key Features & Specs
| Prism Size | Large 8x14mm prism for improved star capture across a wide field |
|---|---|
| Construction | CNC-machined aluminum body for durability and precise tolerances |
| Adapters | Includes M54 and M48 thread adapters for broad telescope and camera compatibility |
| Filter Integration | Compatible with filter drawers and filter wheels, allowing narrowband imaging without removing the OAG |
| Guide Camera Port | Standard 1.25-inch eyepiece port accepts most guide cameras with minimal additional hardware |
| Weight | Lightweight aluminum build keeps the overall imaging train manageable on most mounts |
| Compatibility | Works with a wide range of astronomy cameras and refractor or reflector telescopes using standard threading |
Best for: Intermediate to advanced astrophotographers using dedicated astronomy cameras who want a budget-friendly off-axis guiding solution that integrates cleanly with filter wheels or drawers in their imaging train.