Fortunately this was a very transparent night so the lights of High Wycombe, just a few miles north, were less of a problem than usual.
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Here a bright red patch can be seen in front of the Plough.
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Several times a distinctive red ray formed at different places along the northern horizon.
The Plough is off to the left, Castor and Pollux are to the upper right.
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Here the multiple red rays are joined by a much fainter greenish patch. Red was the dominant colour throughout this display, fortunately slide film records it well.
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There is no right exposure for these effects. Just try a wide range from say ten seconds to a couple of minutes.
This aurora was bright enough that it could easily be overexposed. The rays have also moved slightly during the exposure blurring them out.
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As the aurora strengthened it filled more of the northern sky, completely dominating this view of the Plough.
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This two minute exposure shows how the aurora drowned out the stars.
The greenish curtain was also much higher in the sky as the aurora moved south.
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Pentax P30t, 28mm 8-9th November 1991
Berkshire, England