Target alignment device and method for universal T-shaped tracking and pointing rotary table

The invention provides a device and a method for target alignment of a universal T-shaped tracking and pointing rotary table. The device comprises an adjustable flange, a telescopic reflecting tube, a telescopic bracket, a first fast reflecting mirror, a second fast reflecting mirror and a control panel, the control panel adjusts the postures of the first fast reflecting mirror and the second fast reflecting mirror; the telescopic reflecting tube comprises a first telescopic tube and a second telescopic tube which are both L-shaped; the first telescopic pipe comprises a first vertical pipe and a first transverse pipe, the second telescopic pipe comprises a second vertical pipe and a second transverse pipe, and the sleeving distance between the first transverse pipe and the second transverse pipe is adjustable; light incident in the axial direction of the second vertical pipe is reflected by the second fast reflecting mirror, then is incident to the first fast reflecting mirror in the axial direction of the se