Comet Shoemaker-Levy Impact Sites -- Observed at Lick 3 Meter 
Shane Telescope July 22, 1994 

Images of the A, V, H, N(?), G, R impact sites as they crossed 
the face of Jupiter were taken using the high resolution 
speckle imaging camera at 550 nm and 850 nm between 05:38 and 
06:48 July 22 UT. After speckle image reconstruction, all of 
the impact sites appear dark at these wavelengths, and many 
are surrounded by ringlike structures that are darker on the 
pole side than on the equator side. 

Weather conditions at Lick Observatory were very cloudy until 
05:30 UT. It cleared up for the rest of the night but seeing 
was somewhat worse tonight than previous nights. It appears 
that the H impact site has broken or spread into an irregular 
shape. The new V spot, although we missed the actual impact 
due to clouds, is clearly visible rising over the limb. 

First image:

   550 +/- 20nm filter 
   exposure time: 250 ms per frame 
   20 frames speckle processed 

Second image:

   850 +/- 20nm filter 
   exposure time: 650 ms per frame 
   20 frames speckle processed 

Observers:

   Claire Max, Don Gavel, Erik Johansson, LLNL 
   Mike Liu, UC Berkeley 


For more information on these images, contact: 
gavel1@llnl.gov -- Don Gavel