CLASS 40 GHz 2016 - 2022 Observations (DR1)

Radial Beam Profile and Beam Transfer Function

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The radial beam profile is formed from an aggregate of dedicated observations of the Moon over the course of the survey, spanning all detectors, boresight angles and instrument configurations. The radial profile is delivered as an ASCII table with three columns: radial distance in degrees from peak, peak normalized response, and an uncertainty.

The beam transfer function (b_ℓ, amplitude) is formed from the harmonic transform of the beam, and is normalized to 1.0 at ℓ = 0. The beam transfer function is delivered as an ASCII table with three columns: multipole moment ℓ, the normalized transfer function, and fractional uncertainty Δ(b_ℓ) / b_ℓ.

Additional Information:

CLASS Data Pipeline and Maps for 40 GHz Observations through 2022, Li et al. (2023)

CLASS Angular Power Spectra and Map-Component Analysis for 40 GHz Observations through 2022, Eimer et al. (2023)

Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: 40 GHz Telescope Pointing, Beam Profile, Window Function, and Polarization Performance, Xu, Zhilei, et al. (2020)

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Andrew F. Ptak
LAMBDA Director: Dr. Thomas M. Essinger-Hileman
NASA Official: Dr. Thomas M. Essinger-Hileman
Web Curator: Mr. Michael R. Greason