Fig. 1. (a) Trajectory of incident light with a non-aperture mirror; (b) Pupil vector relation diagram at non-stop position

Fig. 2. Schematic diagram of optical layout of the off-axis TMA telescope and five fields of views used in aberration compensation

Fig. 3. Full field displays (FFDs) for astigmatism in different PM states

Fig. 4. FFDs for coma on PM in different PM states

Fig. 5. FFDs for RMS in different PM states

Fig. 6. FFDs for astigmatism in different TM states

Fig. 7. FFDs for coma in different TM states

Fig. 8. FFDs for RMS in different TM states

Fig. 9. The values of RMS before and after compensation of the five fields of view and the nominal state. (a) F1; (b) F2; (c) F3; (d) F4; (e) F5. Blue dots indicate the value of RMS when the TM surface figure error exists, pink dots indicate the value of RMS after compensation, and green dots indicate the RMS of the system in the nominal state

Table 1. Optical parameters of off-axis TMA telescope

Table 2. Wave aberration coefficients of SM for the off-axis TMA telescope (λ=632.8 nm)

Table 3. Introduced Zernike coefficients for figure error on PM of the off-axis TMA system

Table 4. The adjustment of SM in compensating PM figure error

Table 5. RMS value of system before and after compensation of surface figure error

Table 6. Introduced Zernike coefficients for figure error on TM of the off-axis TMA system

Table 7. The adjustment of SM in compensating TM figure error of the off-axis TMA system

Table 8. RMS value of system before and after compensation of surface figure error

Table 9. The range of x/y astigmatism and x/y coma coefficient of TM figure error