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The Michigan Infrared Combiner (MIRC): IR imaging with the CHARA Array

2004; SPIE; Linguagem: Inglês

10.1117/12.550804

1996-756X

John D. Monnier, Jean-Philippe Berger, R. Millan‐Gabet, Theo A. ten Brummelaar,

Calibration and Measurement Techniques

We present the design of the Michigan Infra-Red Combiner (MIRC). MIRC is planned for deployment at the Georgia State University CHARA array to simultaneously combine all six telescope beams in an image-plane combiner. The novel design incorporates spatial-filtering with single-mode fiber optics, a synthetic (densified) pupil, and a low-resolution spectrometer to allow good calibration and efficient aperture synthesis imaging in the near-infrared. In addition, the focalization and spectrometer optics can accommodate an integrated optics component with minimal re-alignment. The MIRC concept can be scaled-up for interferometer arrays with more telescopes.