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AGB stars appear to lose mass spherically, but many PNe resulting from theAGB mass-loss have non-spherical morphologies. Compact disks have been found insome bipolar PNe, but their role in the shaping process remains unknown.Compact Keplarian disks are found to be common around post-AGB binaries,however, these objects may never develop into PNe. Another group of post-AGBstars, known as pre-PNe, are surrounded by collimated nebulae shining byreflected light or shock ionisation. We are observing the inner circumstellarregions of pre-PNe at high angular resolutions with the VLTI. We seek tocompare pre-PNe disks to those around other post-AGB stars and PNe. Newobservations of the pre-PN, IRAS 16279-4757, show evidence for a disk similarto those seen in young PNe.

Observing Compact Disks Inside Pre-Planetary Nebulae with the Very Large Telescope Interferometer