Min Li, Xin Liu, Ang Zhang, Hao Xian, "Telescope alignment based on the sharpness function of under-sampled images," Chin. Opt. Lett. 17, 061101 (2019)
- Chinese Optics Letters
- Vol. 17, Issue 6, 061101 (2019)
Fig. 1. Cassegrain telescope system.
Fig. 2. Process of telescope alignment.
Fig. 3. Designed and misaligned images with different FWHMs. (a) Designed images. (b) Misaligned images.
Fig. 4. Spectrum of the 0field designed image with FWHMs of 1, 2, 3, and 4 pixels.
Fig. 5. Results of the telescope alignment. (a) Results of the on-axis correction. (b) Results of the all-fields correction.
Fig. 6. Convergence curves of RMS during the correction. (a) RMS changes during the on-axis field correction. (b) RMS changes during the all-fields correction.
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Table 1. Parameters of the Cassegrain Telescope System
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Table 2. Misalignment Errors of the Secondary Mirror
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Table 3. Residual Errors and Wavefront Residual Errors of Optical System Measured After Correction
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