Optec Sagitta Off-Axis Guider

An off-axis guider eliminates differential flexure, a common issue where the guide scope and main imaging telescope shift slightly relative to each other during long exposures. By using the same optical path as your main camera, you ensure your guiding is perfectly locked to the image you are capturing.

The Sagitta features a slim 1.25-inch body thickness, which is designed to minimize back-focus consumption. However, you should always measure your current imaging train to ensure you have enough remaining back-focus distance to accommodate the unit while still reaching focus with your camera.

Yes. The Sagitta is fully compatible with Optec’s FocusLynx and FocusBoss II controller systems. This allows you to integrate automated focus adjustments directly into your remote imaging workflow.

The unit features a variable height prism stalk that offers 12mm of adjustment range. This allows you to position the prism just outside the main camera's sensor area to capture guide stars without obstructing your primary image.

The Sagitta is designed to accommodate guide cameras that utilize a 1.25-inch barrel format. Its versatile brass split-clamp system ensures a secure hold for most standard guide cameras in this size category.

The 3-inch clear aperture is designed to support heavy camera packages and large-format sensors without introducing vignetting. It ensures that your main imaging light path remains unobstructed, even when using high-end, wide-field equipment.