This very brief summary written while I am on vacation, so I don't have access to notes; will fix later.
On Feb 10, 2008, the asteroid (444) Gyptis occulted the star HIP 18539; see Steve Preston's web pages for this event for more information. Tom Campbell recorded the event and kindly sent a copy of the digital video to me for analysis.
I co-added consecutive sets of 10 frames to boost the signal-to-noise ratio.
I measured the brightness of the target and several nearby comparison stars using circular apertures of radii 2, 3, 4, 5 pixels. The tightest results seemed to occur with the smallest aperture:
You can grab the results yourself for further analysis. The interesting columns are