blended objects on the $K$-band image. Matching the output from <span style="font-variant:small-caps;">GALAPAGOS</span> with our Supercolour catalogue, we obtain a final sample of 8098 star-forming galaxies, 1829 passive galaxies, and 348 PSBs in the redshift range $1<z<2$ with M$_{\ast}> 10^{10}
~$M$_{\sun}$.

In Figures \[fig:size-test\] and \[fig:sersic-test\] we display the resulting size and Sérsic measurements for the subset of UDS galaxies within the HST CANDELS survey. Ground-based measurements are compared with those obtained using H-band CANDELS measurements, as published in van der Wel et al. (2012).

For the size measurements, we find a tight relationship between the ground-based $K$-band and CANDELS $H$-band sizes, as previously found by Lani et al. (2013). On average, the sizes obtained from CANDELS are systematically $\sim$13% larger, which is consistent with previous comparisons of size measurements as a function of waveband (e.g. Kelvin et al. 2012). The systematic offset is consistent among the three galaxy populations studied here so we apply no corrections for this effect. The characteristic scatter in $\delta
R/R$, given by the normalized median absolute deviation ($\sigma_{{\rm
    NMAD}}$) is 17%, 16% and 24% for the star-forming, passive and PSB populations respectively.

Ground-based measurements of Sérsic index are far more uncertain for a given galaxy 