The Ultraviolet Micromirror Imaging Spectrograph (UMIS) will be the first UV integral field spectrograph (IFS) to use micro-electro-mechanical systems (MEMS) micromirrors, specifically in the form of two-axis analog micromirror arrays (AMAs). This novel application of AMAs will increase both the flexibility and spectral multiplexing efficiency of UMIS relative to currently available instruments. AMAs are already a widely used technology in telecommunications; this study investigated and proved their suitability for high performance scientific instrumentation. Suitability was determined through evaluation of the individual micromirror component on a custom optical bench set up. The following metrics were evaluated: temporal stability, thermal drift and stability, large-scale linear response and pointing precision. The tests demonstrated that under conditions of 20C - 40C the micromirror's temporal stability, thermal stability, large-scale linear response and pointing precision were stable within the required range. The micromirror's performance, as measured in this experiment, meets the requirements specified in UMIS design and indicates feasibility for future flight instruments. We present the experiment test setup and results in the context of the development of the UMIS testbed instrument.
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