Figure 1
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Red aurora on 24 September 2023 at 23 UT (or in term of local time, September 25 at 1 LT) at 48.3° geographic north and 1.2° geographic east (49.88°N, 84.55°E in geomagnetic coordinates). The pointing direction is North = North-West, as seen from the Ursa Major constellation. The bottom of the red emission is at an elevation of about 5° and its top at an elevation of about 25°.
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