PF BECAME DISORIENTED ON VISUAL APCH IN PART DUE TO AURORA BOREALIS REFLECTING OFF OF HAZE OVER APCH END OF RWY.

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AT 5000 FT MSL ON R DOWNWIND TO RWY 6R AT ANC; THE APCH CTLR (118.6) ASKED IF WE HAD THE ARPT IN SIGHT. I LOOKED TO MY FO; PF; AND HE SAID 'AFFIRMATIVE.' I SAID TO THE CTLR; 'ROGER; ARPT IN SIGHT.' THE CTLR SAID; 'CLRED FOR THE VISUAL APCH TO RWY 6R; CONTACT TWR 118.3.' WE CONFIRMED THIS AND SET 2000 FT IN THE ALT ALERTER. WE STARTED THE R BASE TURN AT 2000 FT MSL. THE TWR CTLR CLRED US TO LAND RWY 6R. IT WAS HAZY WITH PATCHY MIST BELOW; NOT EARLIER VISIBLE AT 5000 FT. IN ADDITION; THE VERY BRIGHT AURORA BOREALIS (NORTHERN LIGHTS) CREATED A GLARE ON THE LOWER MIST AND HAZE. BRUCK NDB WAS OFF THE AIR; SO MANEUVERING AT NIGHT; THE ANC VOR AND CAMPBELL LAKE NDB BECAME PRIMARY FOR ORIENTATION. FROM THE R BASE; HDG 335 DEGS; THE FO (PF) ASKED ME TO JOIN HIM ON THE ILS 111.3; THEREBY LOSING THE ANC VOR FOR ORIENTATION. I TOLD HIM THAT CAMPBELL LAKE NDB POINTS DIRECTLY TO THE APCH END OF RWY 6R. I NOTICED HE HAD BOTH HIS RMI NEEDLES TO VOR; WHICH GAVE NO INFO NOW WITH NO VORS TUNED. I PUT HIS L (#1) RMI PADDLE TO ADF AND SAID THIS POINTS DIRECTLY TO RWY 6R. WHILE I WAS TUNING AND IDENTING RADIOS; HE TURNED (HAND FLYING) TO HDG 035 DEGS; WITH CAMPBELL LAKE BEING AT 350 DEGS. HE SHOULD HAVE STILL BEEN STEERING 335 DEGS. IN ADDITION; THE WIND WAS NOW 350 DEGS AT 40 KTS; PUSHING US STILL FURTHER S OF THE RWY 6R LOC. AT THIS POINT THE FO SAID HE WAS DISORIENTED. I NOTICED THE APCH END LIGHTS HAD DISAPPEARED IN THE GND MIST. I ASKED THE CTLR FOR VECTORS FOR THE ILS RWY 6R. FROM NOW AT 1000 FT MSL; I TOLD THE FO TO STOP DSCNT. AT 800 FT MSL HE RECOVERED AND STARTED A CLB TO OUR NEWLY ASSIGNED ALT OF 2000 FT AND TURNED TO 300 DEGS FOR THE ASSIGNED VECTOR. HE ONLY STARTED OUR CLB AND TURN AT MY INSISTENCE; AT THIS POINT BEING DISORIENTED AND 'RATTLED.' I HAD HIM KEEP THE PLANE AT 160 KIAS WHILE HE COLLECTED HIMSELF AND SETTLED DOWN. HE RESUMED THE APCH AND LANDED FINE. I SHOULD HAVE SHOWED HIM CAMPBELL LAKE BEACON ON OTHER CHARTS DURING HIS BRIEFING. SUPPLEMENTAL INFO FROM ACN 428756: I LOST VISUAL WITH THE ARPT AND TOLD THE CAPT I WAS DISORIENTED AS TO MY POS TO THE LOC AS WELL. WE REQUESTED VECTORS TO THE ILS (ADVISED WE LOST THE ARPT) AND WAS GIVEN A CLB AND VECTORS TO COME BACK AROUND FOR THE ILS.