This image is reproduced from the book T.S. Trondsen: ``High-Resolution Auroral Imaging,'' (C) 1998.
This material may not be used in any communication whatsoever without the express permission of the author.

(a) to (i): Black Aurora; (j): Not black aurora (see above referenced book)

This GIF89, non-interlaced file was generated from an EPSI formatted figure, sub-sampled for anti-aliasing at quadrupled dpi during the conversion process.