Orion Thin Off-Axis Guider

An off-axis guider (OAG) eliminates the need for a separate guide scope, which significantly reduces the weight on your mount and removes the risk of differential flexure—a common issue where the guide scope and main telescope shift slightly relative to each other during long exposures.

Yes, the Orion Thin OAG is specifically designed for this challenge. With a profile thickness of only 10.5mm, it is one of the thinnest options available, making it ideal for Newtonian reflectors or other systems where back-focus travel is extremely limited.

It includes a comprehensive suite of adapters right out of the box, including C-mount to T-threads, a Canon DSLR bayonet, a camera T-adapter, and an M48 male to T-adapter female. You should be able to connect most standard imaging setups without purchasing additional parts.

The lateral adjustment allows you to shift the pick-off prism's position. This is helpful for finding a suitable guide star within the field of view without needing to rotate your entire camera setup.

Yes, the unit is designed to fit a 2-inch barrel size, making it compatible with most standard 2-inch telescope focusers.

The unit features prism stabilization setscrews. Once you have positioned the prism to capture your guide star, tightening these screws ensures a flex-free connection, keeping your guiding stable throughout the night.