Linear map-making with LuSEE-Night
Year: 2026
Type: article
Abstract: LuSEE-Night is a pathfinder radio telescope on the lunar far side employing four 3-m monopole antennas arranged as two horizontal cross pseudo-dipoles on a rotational stage and sensitive to the radio sky in the 1-50 MHz frequency band. LuSEE-Night measures the corresponding 16 correlation products as a function of frequency. While each antenna combination measures radiation coming from a large area of the sky, their aggregate information as a function of phase in the lunar cycle and rotational stage position can be deconvolved into a low-resolution map of the sky. We study this deconvolution using linear map-making based on the Wiener filter algorithm. We illustrate how systematic effects can be effectively marginalised over as contributions to the noise covariance and demonstrate this technique on beam knowledge uncertainty and gain fluctuations. With reasonable assumptions about instrument performance, we show that LuSEE-Night should be able to map the sub-50 MHz sky at a ~5-degree resolution.
Source: The Open Journal of Astrophysics
DOI: 10.33232/001c.158626
Authors: Hugo Camacho, Kaja M. Rotermund, Anže Slosar, Stuart D. Bale, David W. Barker, Jack Burns, Christian H. Bye, Johnny Dorigo Jones, Adam Fahs, Keith Goetz, Sven Herrmann, Joshua J. Hibbard, Oliver Jeong, Marc Klein-Wolt, Léon V. E. Koopmans, Joel Krajewski, Zack Li, Corentin Louis, Milan Maksimović, Ryan McLean, Raul A. Monsalve, Paul O'Connor, Aaron Parsons, Michel Piat, Marc Pulupa, Rugved Pund, David Rapetti, Benjamin Saliwanchik, Graham Speedie, Nikolai Stefanov, David Sundkvist, Aritoki Suzuki, Harish K. Vedantham, Fatima Yousuf, Philippe Zarka
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7133909136