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TMT Optics Discussions with Industry - Thirty Meter Telescope

TMT Optics Discussions with Industry - Thirty Meter Telescope

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Secondary Mirror (M2)<br />

M2 is a large convex aspheric mirror<br />

– 100mm thick solid meniscus<br />

Low expansion glass or glass ceramic<br />

Testing will be performed on the support system in 2 orientations:<br />

– Mirror face down and<br />

– Horizon pointing<br />

Sag 193 mm<br />

Clear Aperture ID 0.22 m<br />

Clear Aperture OD 3.024 m<br />

<strong>TMT</strong>.OPT.PRE.09.099.DRF03 30

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