Kavli Affiliate: Sven Herrmann
| First 5 Authors: Hugo Camacho, Hugo Camacho, , ,
| Summary:
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.
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