Pictures on this page were taken in Ecquevilly village, 30 km westwards Paris, on 10/21/01 between 11:15 PM and 11:30 PM. The camera used was an EPSON PC3000Z digital camera. Exposure time was 8 seconds for each picture. Camera sensitivity has been set on its maximum value.
Exposure time has been virtually multiplied by a 3 factor after a numeric treatment.
It is about 11H20 PM. A red vertical pillar is crossing Ursa Major constellation whose 6 bright stars are visible. In te background, the lights of the Mureaux town distant from 3Km, are glowing.
A few minutes have elapsed and the pillar is getting larger.
Aurora is now spreading over the horizon.
15 minutes after the first picture, the aurora has nearly vanished.
Your suggestions are welcomed