These are the types of features I have seen in the detrended images from 090712.  

satellite streaks:

[[Image(satellite_streak_mask.png)]]

[[Image(satellite_streak_fits.png)]]


star artifacts:

vertical streaks (these do not land on the edge of the chip, and might run through the length of it, but usually do not):

vertical streaks that oscillate between bright and dark:

vertical streaks that land on the edge of the chip (see the tilty streak explosion), these do not always happen near a tilty streak explosion, but it makes it easier to verify the location

tilty streak explosions: