Figure 4

Figure 4

Examples of flickering behaviour for the eclipsing nova-like UX UMa (V~12.5, orbital period=4.72 hr). The light curves were constructed from time-resolved spectroscopy taken with FOS/HST in August and November 1994 at a time resolution of 5s. UX UMa was brighter in November than August, which accounts for the difference in the out of eclipse level and eclipse shape of the two data sets.