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- W2069459209 abstract "We present a design of a thermal-infrared optimized adaptive optics system for the TMT 30-meter telescope. The approach makes use of an adaptive secondary but during an initial implementation contains a more ambient-temperature optical relay and deformable mirror. The optical relay is used without sacrificing the thermal background by using multiple off-axis laser guide stars to avoid a warm dichroic in the common path. Three laser guide stars, equally spaced 75 off axis, and a conventional 30×30 deformable mirror provide a Strehl > 0.9 at wavelengths longer than 10 microns and the LGS beams can be passed to the LGS wavefront sensors with pickoff mirrors while a one-arcminute field is passed unvignetted to the science instrument and NGS WFSs. The overall design is relatively simple with a wavefront correction similar to existing high-order systems (e.g. 30×30) but still provides competitive performance over the higher-order TMT NIR AO design at wavelengths as short as 3 microns due to its reduced thermal emissivity. We present our figures of merit and design considerations within the context of the science drivers for high-spectral resolution NIR/MIR spectroscopy at 5-28 microns on a 30-meter ground-based telescope." @default.
- W2069459209 created "2016-06-24" @default.
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- W2069459209 date "2006-06-14" @default.
- W2069459209 modified "2023-10-14" @default.
- W2069459209 title "MIRAO: a mid-IR adaptive optics system design for TMT" @default.
- W2069459209 doi "https://doi.org/10.1117/12.670062" @default.
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