A detailed comparison is made of results from the Lunar Prospector Neutron Spectrometer ( LPNS ) and the Lunar Exploration Neutron Detector Collimated Sensors for EpiThermal Neutrons ( LEND CSETN ) .
Using the autocorrelation function and power spectrum of the polar count rate maps produced by these experiments , it is shown that the LEND CSETN has a footprint that is at least as big as would be expected for an omni-directional detector at an orbital altitude of 50 km .
The collimated flux into the field of view of the collimator is negligible .
Arguments put forward asserting otherwise are considered and found wanting for various reasons .
The maps of lunar polar hydrogen with the highest contrast , i.e .
spatial resolution , are those resulting from pixon image reconstructions of the LPNS data .
These typically provide weight percentages of water equivalent hydrogen that are accurate to 30 \% within the polar craters .