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97 papers
The Simons Observatory: Frequency-resolved beam calibration for the SO SATs with POLOCALC
Nadia Dachlythra, Gabriele Coppi, Ludovico Bizzarri +30
We present a far-field beam calibration of the Simons Observatory (SO) Small Aperture Telescopes (SATs) using scanned single-frequency measurements of a drone-mounted source emitti…
The Simons Observatory: Commissioning of the Mid-Frequency Small Aperture Telescopes
Kathleen Harrington, Remington Gerras, Nicholas Galitzki +88
The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment observing from an altitude of 5,200 m in the Atacama Desert in Chile. The SO Small Aperture Tel…
In-Band Scattering and Absorption of Infrared Blocking Foam Filters for Millimeter-wave Cameras
Alex Thomas, Bugao Zou, Shreya Sutariya +11
Expanded closed-cell polymer foams are widely used as thermal infrared (IR) blocking filters in millimeter-wave cameras, particularly for Cosmic Microwave Background observations.…
The Simons Observatory: Overview of the Cryogenic Half-wave Plate Polarization Modulators
Junna Sugiyama, Kyohei Yamada, Bryce Bixler +5
The Simons Observatory (SO) is a ground-based Cosmic Microwave Background (CMB) experiment that is located in the Atacama plateau. The Small Aperture Telescopes (SATs) of SO are op…
The Simons Observatory: Rotation Performance of Cryogenic Half-Wave Plate Polarization Modulators
Kyohei Yamada, Bryce Bixler, Junna Sugiyama +10
We present the on-site rotation performance of the first three cryogenic continuously rotating half-wave plate (HWP) polarization modulators for the Simons Observatory small apertu…
The Simons Observatory: On-sky performance of radio-transparent multi-layer insulation (RT-MLI) using Styroace-II Styrofoam
Samuel Day-Weiss, Nicholas Galitzki, Atsuto Takeuchi +14
We present the on-sky performance of a Radio-Transparent Multi-Layer Insulation filter (RT-MLI) that uses Styroace-II styrofoam to reject ambient thermal radiation from entering a…