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The Kepler Observatory offers unprecedented photometric precision (<1 mmag)and cadence for monitoring the central stars of planetary nebulae, allowing thedetection of tiny periodic light curve variations, a possible signature ofbinarity. With this precision free from the observational gaps dictated byweather and lunar cycles, we are able to detect companions at much largerseparations and with much smaller radii than ever before. We have been awardedobserving time to obtain light-curves of the central stars of the six confirmedand possible planetary nebulae in the Kepler field, including the newlydiscovered object Kn 61, at cadences of both 30 min and 1 min. Of these sixobjects, we could confirm for three a periodic variability consistent withbinarity. Two others are variables, but the initial data set presents only weakperiodicities. For the central star of Kn 61, Kepler data will be available inthe near future.

Searching for binary central stars of planetary nebulae with Kepler