▁specific ations ▁ ▁N arrow ▁angle ▁camera ▁( N AC ) ▁The ▁N AC ▁provides ▁very ▁high - resol ution , ▁s tere o ▁reconna issance , ▁generating ▁ 2 ▁km ▁wide ▁sw ath s ▁at ▁ 0 . 5 ▁m ▁pixel ▁scale ▁from ▁ 5 0 ▁km ▁alt itude . ▁N AC ▁observations ▁also ▁include : ▁near - global ▁( > 9 5 %) ▁mapping ▁of ▁Europa ▁at ▁ ≥ 5 0 ▁m ▁pixel ▁scale ; ▁regional ▁and ▁high - resol ution ▁s tere o ▁imag ing ▁at ▁< 1 ▁m / p ixel , ▁and ▁high ▁phase ▁angle ▁observations ▁for ▁pl ume ▁searches . ▁The ▁N AC ▁will ▁also ▁perform ▁high - phase - angle ▁observations ▁to ▁search ▁for ▁potential ▁pl umes , ▁even ▁when ▁the ▁space craft ▁is ▁distant ▁from ▁Europa . ▁▁ ▁W ide ▁angle ▁camera ▁( W AC ) ▁The ▁W AC ▁will ▁ac quire ▁s tere o ▁reconna issance , ▁generating ▁digital ▁top ographic ▁models ▁with ▁ 3 2 ▁m ▁spatial ▁scale ▁and ▁ 4 ▁m ▁vertical ▁precision ▁from ▁ 5 0 ▁km ▁alt itude . ▁ ▁References ▁ ▁Category : Space ▁imag ers ▁Category : E uropa ▁( mo on ) ▁Category : E uropa ▁C li pper <0x0A> </s> ▁Not ope pl um ▁c oss ign ani ▁is ▁a ▁species ▁of ▁sea ▁sn ail , ▁a ▁marine ▁g ast rop od ▁m oll usk ▁in ▁the ▁family ▁Vol ut idae ▁. ▁ ▁Original ▁description ▁ ▁Po ppe ▁G . T . ▁( 1 9 9