Abstract: To better control large field of view active optical telescopes, this paper explains the basic principles of detecting and calibrating the adjustment components in telescopes based on internal and external measurement systems. Error analysis is performed on the calibration process of large field of view active optical telescopes, and the principle of the detection method for motion components of large field of view active optical telescopes is demonstrated through desktop experiments. Non-diffractive uniform beam splitting is achieved, overcoming the disadvantages of diffractive beam splitting, such as multiple stray fringes and small splitting angles. The dispersion angle is higher than 100°, with an accuracy better than 15 µm and an angular accuracy better than 3″. The calibration accuracy based on wavefront sensing is better than 10 µm, which can effectively improve the calibration accuracy of the adjustment elements of large-aperture, large field of view telescopes and ultimately enhance the imaging quality of the telescopes.