est ine ▁resistance ▁group ▁X U . ▁He ▁was ▁eventually ▁discovered , ▁but ▁fled ▁to ▁Sweden ▁in ▁ 1 9 4 4 . ▁He ▁was ▁decor ated ▁with ▁the ▁Def ence ▁Medal ▁ 1 9 4 0 ▁– ▁ 1 9 4 5 . ▁He ▁continued ▁his ▁studies ▁in ▁Stockholm , ▁and ▁was ▁an ▁assistant ▁for ▁Bert il ▁Lind bl ad ▁at ▁Stockholm ▁Observ atory ▁from ▁ 1 9 4 4 ▁to ▁ 1 9 4 6 . ▁He ▁then ▁returned ▁to ▁Norway ▁and ▁graduated ▁with ▁the ▁cand . real . ▁degree . ▁He ▁was ▁married ▁to ▁Lu isa ▁A all ▁Bar ric elli , ▁a ▁daughter ▁of ▁Mar na ▁A all ▁and ▁professor ▁Maur izio ▁Bar ric elli , ▁from ▁ 1 9 4 8 ▁to ▁ 1 9 6 1 . ▁Bra h de ▁married ▁st en ograph er ▁Els ie ▁Un n ▁Ax elsen ▁in ▁ 1 9 6 3 . ▁ ▁Al ready ▁one ▁year ▁after ▁gradu ating , ▁in ▁ 1 9 4 8 , ▁Bra h de ▁was ▁h ired ▁as ▁observer ▁at ▁the ▁University ▁of ▁Os lo . ▁In ▁this ▁position , ▁he ▁was ▁responsible ▁for ▁the ▁construction ▁of ▁Har est ua ▁Sol ar ▁Observ atory ▁north ▁of ▁Os lo . ▁He ▁lect ured ▁in ▁cel est ial ▁mechan ics ▁and ▁spher ical ▁astronom y , ▁and ▁also ▁research ed ▁opt ics ▁related ▁to ▁astronom ical ▁instruments ▁as ▁well ▁as ▁calculating ▁the ▁tid al ▁force ▁and ▁the ▁lun ar ▁eclipse . ▁He ▁pione ered ▁the ▁use