  B, V, i, and z bandpass observations were collected in late 2020 for three
RRab type stars: UU Ceti, UW Gruis, and W Tucanae. The period-luminosity (PL)
relationships of Catalen et al. (2004) and Caceres \& Catelan (2008) were
applied to derive distances. These were found to be in reasonable agreement
with the Gaia Early DR3 distances, lending confidence to use of the PL
relationships. Fourier decompositions were applied to data from the TESS space
telescope to derive, using stepwise linear regression, an empirical
relationship between terms of the decomposition and the pulsation period with
metallicity [Fe/H]. TESS data were available for UU Cet and W Tuc out of the
three studied studies. The derived equation gave metallicities in line with the
literature for both stars, lending confidence to their usage in the PL-derived
distances.
