FINKER’s frequency search for V772 Cas with an adaptive bandwidth. The panel on the left shows the frequency range searched and the wild behaviour of the residuals due to the low number of points. The inset shows that the best frequency agrees with the literature values; however, the estimated uncertainty is unreliable due to the really low number of observations. The panel on the right shows the light curve folded at the found frequency with the kernel regression fit (green line) overlaid.