Three dark features were observed visually using a 36 cm (f/11) Schmidt-
Cassegrain Telescope. The first crossed the central meridian of Jupiter
at 3:50 UT, July 18, 1994 and appeared almost like a Galilean moon shadow
(roughly 6000 km in diameter). There was an irregular feature to the
south-preceding edge of this dark spot. Perhaps the dark spot
and irregular feature were the impact sites of F and/or E.
The second feature crossed the central meridian at 4:38 UT, July 18, 1994 and appeared gray (about 9000 km in diameter). This one may have been the impact site of fragment A. The third feature was similar to the second and was probably the impact site of fragment C. The transit time of this feature could not be measured accurately but was roughly 5:40 UT, July 18, 1994.