RAGDA – Auroral Dunes A sequence of auroral activity was photographed over Ørsta. The evening began with a RAGDA‑type green arc, followed by a southern auroral band, and later long, parallel light bands consistent with auroral dunes. Timeline of images (local time, but time is UTC on images) 22:03 – RAGDA‑like green arc low in the sky 22:52 – green patch 23:03 – first thin parallel stripes 23:06 – clearer stripes; brighter aurora above 23:40 – distinct banded pattern 23:42 – strong, well‑defined parallel bands (auroral dunes) 23:46 – weaker but still visible banded structure 00:00 – final faint stripes before fading Notes: Parallel banding visible from 23:03 to 00:00. Eight images covering the full progression.

Local time: 23:42 – strong, well‑defined parallel bands (auroral dunes)

Local time: 22:03 – RAGDA‑like green arc

Local time: 22:52 – green (proton) patch

Local time: 23:03 – first thin parallel stripes

Local time: 23:06 – clearer stripes; brighter aurora above

Local time: 23:40 – distinct banded pattern

Local time: 23:46 – weaker but still visible banded structure

Local time: 00:00 – final faint stripes before fading

Summary

This sequence documents the transition from a faint southern structure into clearly defined parallel bands and later auroral dunes. The images are numbered in chronological order to show the development step by step.

This observation was recently recovered from a broken cameras’ memory card, and now presented.