1. If you use a field flattener or a coma corrector that requires a specific distance to the sensor, calculate the necessary spacing first.
2.Remove the prism and connect the body of the OAG to the telescope.
3. Insert the prism in the OAG

4. Connect the guiding camera

5. Connect the T2 (M42 or M48) adapter to the main camera.

6. Connect the camera to the OAG and lock the 3 thumb screws. Check that the prism is positioned on an angle that would not block the imaging area.


7. Focus with the main camera and then slide the prism along with the guiding camera in order to reach the focus.
