LuSEE Night is a low frequency radio astronomy experiment that will be delivered to the farside of the Moon by the NASA Commercial Lunar Payload Services (CLPS) program in early 2026. LuSEE Night is designed to characterize the galactic radio foreground with best-yet sensitivity and depth but will also measure solar, planetary, and other astrophysical sources. The payload system under contract and being developed jointly by NASA and the US Department of Energy (DOE) and consists of a 4 channel, 50 MHz Nyquist baseband receiver system and 2 orthogonal ~6m tip-to-tip electric dipole antennas. LuSEE Night will enjoy standalone operations through the lunar night, without the electromagnetic interference (EMI) of an operating lander system and antipodal to our noisy home planet. LuSEE Night will also be supported by a NASA-funded far-field calibration source, in the form of a lunar-orbiting radio transmitter that broadcasts a pseudo-random code sequence; LuSEE Night will correlate against the code and use the signal to calibrate antenna pattern and system spectral chromaticity.
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