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Digital Holography at Long-Wave Infrared for Measuring the Deformation of Large Space Reflectors under Thermal Vacuum

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Academic year: 2021

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Figure

Fig. 4 shows the phase difference measurement obtained  by tilting the reflector, which demonstrates the  feasibility of the proposed technique
Figure 6. Configuration of the thermal vacuum test.
Figure 8. Deformation of the reflector (in µm) at 113 K  compared to its shape at 288 K

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