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We present new photometric observations of the $\beta$ Lyrae-type eclipsingbinary systems NSVS 7322420 and NSVS 5726288. These observations represent thefirst multi-band photometry performed on these systems. The light curves wereanalyzed with PHOEBE, a front-end GUI based on the Wilson-Devinney program, toproduce models to describe our observations. Our preliminary solutions indicatethat NSVS 7322420 is a primary filling semi-detached system with unusualfeatures warranting further study. These features include a pronouncedO'Connell effect, a temporal variance in the light curve, and an unusual "kink"in the light curve around the secondary eclipse. The cause of these features isunknown, but one possibility is the transfer of mass between the componentstars. Meanwhile, NSVS 5726288 is probably a typical detached system.

Observations and Preliminary Modeling of the Light Curves of Eclipsing Binary Systems NSVS 7322420 and NSVS 5726288