WEAVE is the new wide-field spectroscopy facility for the prime focus of the William Herschel Telescope at La Palma, Spain. Its fibre positioner is essential for the accurate placement of the spectrograph's 960 fibre multiplex. We provide an overview of the final assembly and metrology of the fibre positioner, and results of lab commissioning of its robot gantries. A completely new z-gantry for each positioner robot was acquired, with measurements showing a marked improvement in positioning repeatability. We also present the first results of the configuration software testing, and discuss the metrology procedures that must be repeated after the positioner's arrival at the observatory.
@article{arxiv.2012.07734,
title = {Final assembly, metrology, and testing of the WEAVE fibre positioner},
author = {Sarah Hughes and Ellen Schallig and Ian J. Lewis and Gavin Dalton and David Terrett and Don Carlos Abrams and J. Alfonso L. Aguerri and Georgia Bishop and Piercarlo Bonifacio and Matthew Brock and Esperanza Carrasco and Kevin Middleton and Scott C. Trager and Antonella Vallenari},
journal= {arXiv preprint arXiv:2012.07734},
year = {2020}
}