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We present bi-static observations of radio-wave induced optical  emissions at 6300 and 5577 Å from a night-time  radio-induced optical emission ionospheric pumping experiment at the  HIPAS (Fairbanks) facility in Alaska. The optical observations were  made at HIPAS and from HAARP located 285 km south-east.  From  these observations the altitude distribution of the emissions is  estimated with tomography-like methods. These estimates are compared  with theoretical models. Other diagnostics used to support the  theoretical calculations include the new Poker Flat AMISR UHF radar  near HIPAS. We find that the altitude distribution of the emissions  agree with electron transport modeling with a source of accelerated  electrons located 20 km below the upper-hybrid  altitude

First estimates of volume distribution of HF-pump enhanced emissions at 6300 and 5577 Å: a comparison between observations and theory