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arxiv: 2304.01469 · v1 · pith:74WVZDOQnew · submitted 2023-04-04 · 🌌 astro-ph.IM

Fabrication of a Monolithic 5-Meter Aluminum Reflector for Millimeter-Wavelength Observations of the Cosmic Microwave Background

Tyler Natoli , Bradford Benson , John Carlstrom , Eric Chauvin , Bruno Clavel , Nick Emerson , Patricio Gallardo , Mike Niemack
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Steve Padin Klaus Schwab Lutz Stenvers Jeff Zivick
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classification 🌌 astro-ph.IM
keywords reflectoraluminumbackgroundcosmicfabricationmetermicrowavemillimeter-wavelength
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We have demonstrated the fabrication of a monolithic, 5-meter diameter, aluminum reflector with 17.4 $\mu$m RMS surface error. The reflector was designed to avoid the problem of pickup due to scattering from panel gaps in a large, millimeter-wavelength telescope that will be used for measurements on the cosmic microwave background.

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