We observed the field of GRB 100816A (Oates et al., GCN 11102) with the
NOT equipped with ALFOSC. Observations were carried out in the R band.
The mid point of the observation is August 17.04 UT (24.3 hr after the GRB).

We clearly detect both the optical afterglow (Oates et al., GCN 11102)
and the putative host galaxy (Im et al., GCN 11108; Tanvir et al., GCN
11109). We find magnitudes of R = 23.0 +- 0.1 and R = 21.65 +- 0.05 for
the two objects, respectively, assuming R=17.06 for the nearby USNO star
1165-0595190. We caution that accurate photometry will have to await for
late-time templates to isolate the contribution of both objects