Ever since we all saw and photographed a wonderful aurora in Lofoten, 4 years ago, I've been determined to shoot a "Scottish" aurora. I signed up for an "aurora alert" service which let me down twice by not giving an alert until the aurora was nearly finished; on other occasions of strong indications, it was cloudy in Scotland.
Finally, tonight, I got something - not in the same league as we had in Lofoten, but something, just the same. To the naked eye it was very faint, but just visible; but the camera, as usual, does a superb job of light-gathering. I haven't actually checked the metadata but it was something like 8 secs at f4, 1000iso, 28/f2 AIS (on D600).