William Optics High Latitude Vixen Base Mount & Extension Bar

This base is designed specifically for the iOptron SkyGuider Pro and the Sky-Watcher Star Adventurer 2i. It uses a standard Vixen-style interface, making it a direct upgrade for these popular portable imaging rigs.

This range is optimized for mid-to-high northern latitudes. If you are observing from the southern United States, Canada, or Europe, this base will provide the necessary adjustment range for accurate polar alignment.

The extension bar is essential if you are using heavier camera lenses or a small telescope setup. It provides the extra leverage needed to balance your rig properly, which reduces strain on your mount's motor and improves tracking accuracy during long exposures.

Unlike single-point locking screws that can mar or scratch your dovetail bar, the split-clamp saddle applies even pressure across a wider surface area. This ensures a more secure, vibration-free lock while keeping your equipment in pristine condition.

Yes, the knobs are designed with a tactile, ergonomic grip that makes them easy to locate and adjust by feel. The precision-machined threads allow for smooth, incremental movements, which is critical when you are making micro-adjustments for polar alignment at night.