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McDonald Image of Fragment DGHL Impacts


This pair of images was obtained with the 0.8m telescope of the University of Texas McDonald Observatory on 20 Jul 1994 UT (19 Jul CDT) at 03:02 and 03:06 UT (10:02pm and 10:06pm CDT). North is up and east is on the left. An 893nm filter which isolates absorption by methane gas was used for the left image. This filter makes high cloud features appear bright. An 829nm filter was used for the right hand image. This filter is similar to what would be seen by a human eye. In the methane image, we see 3 bright impact sites. The impact site from piece L is on the right limb in this image. The G and D impact sites (merged together) are just to the left of the L site. The H impact site is near the east (left) limb. The Great Red Spot can be seen just coming over the east limb. Note the structure of the impact sites, especially the G site. The sites all clearly show a central spot, some dark space and then an arc of material to the southwest. In comparison, the 829nm image shows only the G and H impact sites since the L site is lost in the limb darkening. The Great Red Spot is not very easily seen in the 829nm image. Note, also, the difference in the polar hoods and the bands of Jupiter.

This image was obtained by Dr. Chan Na (Southwest Research Institute), Dr. Wayne Pryor (University of Colorado) and Dr. Anita Cochran (University of Texas).

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