The emission, which is intrinsic to the nebula and not scattered or reflected light, is in a broad band in the red part of the spectrum, peaking at about 640 nanometres. It is the strongest known source of this red emission, which may be a result of luminescence from hydrogenated carbon dust. Pour rehausser les d tails, j'ai utilis la technique d' galisation d' histogramme. The utilisation of specific filters should permit the production of better pictures than the one shown here, which had to be enhanced with the histogram equalisation technique. It may not be reproduced in any form without written permission of the copyright owner.
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