Chinese Optics, Volume. 15, Issue 4, 747(2022)
Aberration coupling characteristics of axial and lateral misalignments of off-axis three-mirror telescopes
Fig. 1. (a) Schematic diagram and (b) experiment device of the 500 mm off-axis three-mirror system
Fig. 2. FFDs (full field displays) for astigmatism in different states
Fig. 4. Aberration field distribution when the minimized astigmatism field change is set as the goal for compensation
Fig. 5. Aberration field distribution when the minimized coma field change is set as the goal for compensation
Fig. 6. Full-field distributions of RMS wavefront error for different states in the process of compensating the aberrations induced by lateral misalignments using axial mialignments
Fig. 7. Aberration field distribution in different states when the lateral misalignment compensates for the axial misalignment
Fig. 8. Full-field distributions of RMS wavefront error before and after compensating the aberrations induced by axial misalignments (ZDE_SM=1mm) using lateral mialignments
Fig. 9. Full-field distributions of RMS wavefront error before and after compensating the aberrations induced by axial misalignments (ZDE_SM=−1mm) using lateral misalignments
Fig. 10. Measurement results with interferometer under different conditions (remove some high frequency)
Table 1. Sensitivity of the wavefront aberration coefficient to the distance between primary and secondary mirrors (632.8 nm/mm)
View tableView in ArticleTable 1. Sensitivity of the wavefront aberration coefficient to the distance between primary and secondary mirrors (632.8 nm/mm)
像差系数 像差系数对主次镜间距的敏感度 $ {K_{040{d_1}}} $ 0.080 $ {K_{222{d_1}}} $ 0.239 $ {K_{131{d_1}}} $ −0.119
Table 2. Sensitivity of the wavefront aberration coefficient to the distance between the secondary and tertiary mirrors (632.8 nm/mm)
View tableView in ArticleTable 2. Sensitivity of the wavefront aberration coefficient to the distance between the secondary and tertiary mirrors (632.8 nm/mm)
像差系数 像差系数对次三镜间距的敏感度 $ {K_{040{d_2}}} $ −0.006 $ {K_{222{d_2}}} $ −0.016 $ {K_{131{d_2}}} $ 0.028
Table 3. The difference in the astigmatism coefficient obtained by different methods (
λ =632.8 nm)View tableView in ArticleTable 3. The difference in the astigmatism coefficient obtained by different methods (
λ =632.8 nm)视场 Zernike 像差系数 仿真软 件获取值 公式 计算值 （0.3°，−0.8°） $ \Delta {C_5} $ −0.0038 −0.0026 $ \Delta {C_6} $ −0.0495 −0.0388 （−0.3°，−0.8°） $ \Delta {C_5} $ 0.0109 0.0118 $ \Delta {C_6} $ −0.0659 −0.0618
Table 4. The difference in the coma coefficient obtained by different methods (
λ =632.8 nm)View tableView in ArticleTable 4. The difference in the coma coefficient obtained by different methods (
λ =632.8 nm)视场 Zernike 像差系数 仿真软件获取值 公式 计算值 （0.3°，−0.8°） $ \Delta {C_7} $ −0.0107 −0.0108 $ \Delta {C_8} $ 0.0115 0.0108 （−0.3°，−0.8°） $ \Delta {C_7} $ −0.0136 −0.0134 $ \Delta {C_8} $ 0.0113 0.0110
Table 5. Sensitivity of the aberration coefficient to misalignment (632.8 nm/mm and 632.8 nm/°)
View tableView in ArticleTable 5. Sensitivity of the aberration coefficient to misalignment (632.8 nm/mm and 632.8 nm/°)
C5 C6 C7 C8 XDE 0.053 1.419 0.290 -0.001 YDE −1.410 0.051 −0.0001 0.276 ZDE −0.240 0.031 0.0129 0.139 ADE 8.394 −2.396 −0.014 −2.600 BDE 2.351 8.190 2.522 −0.0165
Get Citation
Copy Citation Text
Xiao-quan BAI, Liang GUO, Hong-cai MA, Bo-qian XU, Guo-hao JU, Shu-yan XU. Aberration coupling characteristics of axial and lateral misalignments of off-axis three-mirror telescopes[J]. Chinese Optics, 2022, 15(4): 747
Category: Original Article
Received: Aug. 30, 2021
Accepted: Jan. 6, 2022
Published Online: Sep. 6, 2022
The Author Email:
