showcases a few snapshots digitized from the body of footage obtained
during field-trips to the CANOPUS
Rabbit Lake site by Wollaston Lake, Saskatchewan, March 1994, 1995,
and 1997. A schematic
drawing and photograph of the instrument
setup has also been released, along with a few public relations viewgraphs. All images
below, except those under the heading `Ultra Thin Arcs', were obtained
using a Nikon 105 mm f/1.8 lens. See
also the viewgraph
illustrating the imager's field of view.
||The field of view in
each image is about 13.5 by 10.1 km at auroral heights (~105 km
altitude). North is up and west is to the right, a natural orientation
when looking up antiparallel to a magnetic field line while aiming your
camera (the camera optical axis was aligned to the local magnetic field
line). Integration time was 1/60th second. No optical filtering was
performed. Pseudo-colors have been added in some cases to aid in
discerning small scale features. Images are thus mainly of scientific
interest. For more information regarding
these images, cf. the most recent scientific
NOTE: The Movie Clips below are hopelessly outdated.
New, longer movies using QuickTime technology available upon request.
NOTE: Please have a look at some Kelvin Helmholtz
phenomena at Patrick
Witting's site. Do these remind you about some of the
below images? Pretty fundamental stuff, in other words....
Both spatial and temporal
resolution have been dramatically decreased so as to minimize the size
of the MPEG encoded files. The frame-rate you experience will depend on
your particular mpeg viewer and computer system. You may have to step
through the sequence of frames manually if things flash by too quickly.
You may not use these images
for scientific and/or commercial purposes without our written
permission, as all images, whether stills or time-series, are ©
1994, 1995 by the ISR (I suppose). We wish to thank the Canadian Space
Agency (CSA) for kind permission to use the Rabbit Lake CANOPUS
facility. This research project was funded by the Natural Sciences and
Engineering Research Council of Canada.
Back to The
Portable Auroral Imager Home Page
Last modified November 17, 1997
by Trond S. Trondsen (email@example.com)