Image Details
Caption: Fig. 8.
Stacked composite image of all epochs of data in the CH4 filter. Contour levels are 0.1%, 0.2%, 0.5%, 1%, 2%, 5%, 10%, 20%, 30%, and 70% of the peak. Individual images have been projected to a face‐on viewing angle and derotated to the first Apr98 epoch according to the best‐fit Archimedean spiral model prior to co‐adding.
© 2008. The American Astronomical Society. All rights reserved. Printed in U.S.A.