Could have been clearer of course. You can basically scoop Neutron stars now to boost your jump range by 300 %. However, if you get disconnected when jumping from the Neutron system to another you will end up in the Neutron danger zone (out of supercruise of course), taking module damage. You can't really control your ship in this situation making supercruise very hard to engage, escape vector or aligning to another system.
This actually happened 10K ly back but I managed to get out of that one, which gave me confidence on continuing the Neutron highway route!
EDIT: Oh and the scanner thing is a Christmas tree you buy from the Frontier store, much like the bobble-heads.