  Umbral dots (UDs) were observed using the 1.6 meter solar telescope. Achieved
conventional diffraction limit in the TiO 705.68 nm spectral line used was
0.1". The 418 UDs were analysed. Median diameter was 0.5'' and median intensity
difference between darkest part of the UD's background and brightest part of
the UDs was 37%. Despite to achieved resolution, no UDs substructures were
visible. The analysed UDs appeared to be circular.
