The large aperture mirror surface test is the basis of optical processing and alignment, and is also the key to the development of remote sensing device. The simulation results show that the RMS values of 1.07 m primary mirror with multi-point support and sling support are 1.86 nm and 3.28 nm respectively. Using 36 point unloading device, sponge 36 point free support and sling support to test the mirror surface, the results are basically consistent, RMS is better than 0.02λ (λ = 632.8 nm).
References
[1]
Han, G., Cao, L. and Gao, Y. (2012) Supporting and Assembling for Primary Mirrors of 1 m Aperture Telescopes. Optics and Precision Engineering, 20, 1922-1927.
https://doi.org/10.3788/OPE.20122009.1922
[2]
Meng, X., Wang, Y. and Li, W. (2019) Fabrication of Zero-Gravity Surface for Large-Aperture Aspherical Mirror by Using Rotationally Method. Optics and Precision Engineering, 27, 2517-2522. https://doi.org/10.3788/OPE.20192712.2517
[3]
Guo, P. and Yu, J. (2006) Improving Precision of Null Lens Method with Correction Technique. Optics and Precision Engineering, 14, 204.
[4]
Wang, C., Huang, Y. and Wang, C. (2020) High Precision Reconstruction and Adjustment Technique for Surface Figure Error of the Off-Axis Reflective System. Spacecraft Recovery & Remote Sensing, 41, 58-61.
