Image 2: September 12th, 2002.  Describe the changes between the 10th and the 12th. 
Predict what will happen next. Click the image to see September 16th.

The University of Chicago Yerkes Observatory
Rooftop Telescope - North
10 inch Meade LX200, f/10, 250 cm focal length
SBIG CCD ST9e, 20 micron pixels (0.0020 cm)
Pixel scale = 1.62 arcseconds/pixel
Clear filter; 10 second exposure

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