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Fig. B.1

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Layout of three camera lenses designed for EST-B narrowband FPI system. Top: Camera lens designed for 5 μm pixel size; middle: 12 μm pixel size camera lens optimised for image quality; bottom: 12 μm pixel size camera lens optimised for reduced image scale changes when refocusing. The 5 μm and 12 μm systems are drawn at different scales. For further details of the systems, see Tables B.2 and B.3.

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