C. Sterken, C. Wiedemair, T. Munaro, J. Rigo, J. Durnwalder, A. Kirchler, J. Damini Hofer, F. Schraffl, E. H. Olsen and T. Tuvikene
Based on more than a dozen partial nights of filterless CCD photometry combined with Str\"omgren $uvby$ photomultiplier photometry, we derive 29 new times of maximum light of the SX Phoenicis star CY Aquarii. These times support a linear ephemeris for 2003--2011. In addition, we present $uvby$ light curves for this star. Our dataset displays the smallest residual spread compared to any other substantial dataset published during the last decade.
Manuscript in pdf format: jad18_2.pdf