urn:nasa:pds:clps_to_2ab_nss:document:to_2ab_nss_user_guide 1.0 1.19.0.0 Product_Document 2024 User Guide document for NSS onboard Astrobotic Peregrine Lunar Lander. 2024-07-19 1.0 First release of TO-2AB NSS data. 10.1016/j.nima.2023.168063 Peplowski, P.N., et al. (2023), Calibration of NASA’s Neutron Spectrometer System (NSS) for landed measurements of hydrogen content of the lunar subsurface, Nuclear Inst. and Methods in Physics Research, A 1049. Elphic, R.; Dibb, S.; Espiritu, R.; Waller, D. 2024-03-29 User Guide document for NSS onboard Astrobotic Peregrine Lunar Lander. PDF/A English 1 to_2ab_nss_user_guide.pdf PDF/A