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Lick Image of Fragment A, C & E Impacts


Impact Sites C, A, and E Observed in the Visible at Lick Observatory

This image show visible-wavelength speckle image reconstructions of Jupiter taken on July 18 1994 at 04:52 UT.

Dark spots are clearly visible at the impact locations of comet fragments C, A, and E (or, possibly, F), These spots can be seen in the top portion of the image (C on the left, E on the right). As shown, the images are in the same orientation as they were acquired, with the south pole up and east on the left. The spots are approximately 1 arc second in diameter, and impact sites A and E appear to have ring structures surrounding them.

The image was taken with the following parameters:

Wavelength:	550 nm
Bandwidth:	40 nm
Plate scale:	0.063 arc-sec/pixel
Size:		750 x 750 pixels (appx 47 arc-sec x 47 arc-sec)
Exposure time:	250 ms
No. of frames:	40

The images were processed using a speckle bispectral reconstruction algorithm. Each image shown combines the information from 40 short exposure frames taken over a total time of 2 minutes.


Claire Max, Don Gavel, Erik Johansson, LLNL
Mike Liu, UC Berkeley
Bill Bradford, UC Santa Cruz

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