Swift-XRT 0.3–1.0 keV (top) and UVOT uvw2 (bottom) light-curves of HV Cet. Inset into both panels is a expanded view of the light-curves from day 65 to 80, which covers the first high cadence campaign. The X-ray count rate is plotted with a logarithmic scale for ease of comparison with the UV magnitudes. The discovery date is taken as 2008-Oct-07 at 09:08:49 UTC. In the lower panel, * and  ×  symbols mark the times of the GALEX imaging and grism observations respectively.