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Pentaprism Testing

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This technical note provides an overview of test setups and analysis for testing pentaprisms using a Fizeau interferometer. The following equipment is required: GPI, Mark II, Mark III, Mark IV, PTI or GH interferometer; and Transmission Flat. Option accessories that make the testing easier are: Reference Flats, Aperture Converter, 90° Reference Angle, and tip/tilt mounts.
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