We present the ground-based detection of the secondary eclipse of the transiting exoplanet WASP-19b .
The observations were made in the Sloan z ’ -band using the ULTRACAM triple-beam CCD camera mounted on the NTT .
The measurement shows a 0.088 \pm 0.019 % eclipse depth , matching previous predictions based on H - and K -band measurements .
We discuss in detail our approach to the removal of errors arising due to systematics in the data set , in addition to fitting a model transit to our data .
This fit returns an eclipse centre , T _ { 0 } , of 2455578.7676 HJD , consistent with a circular orbit .
Our measurement of the secondary eclipse depth is also compared to model atmospheres of WASP-19b , and is found to be consistent with previous measurements at longer wavelengths for the model atmospheres we investigated .