This is the public release of VLT/MUSE integral field spectroscopy observations of a 3'x8' mosaic along the southern major axis of the Local Group spiral galaxy M33, obtained under ESO Programme 109.22XS.001 (PI: G. Cresci). The observations were carried out in seeing-limited wide-field mode (WFM), covering the nominal wavelength range 4750 and 9350 Å .

The final mosaic comprises 24 pointings, corresponding to a total sky coverage of ~24 arcmin² (~1.43 kpc² at the distance of M33), with a spatial sampling of 0.2″ per pixel (≈0.8 pc physical scale). The released product include a fully reduced and flux-calibrated datacube and the emission-line maps published as an ancillary file (category: ANCILLARY.IMAGE).

This release enables spatially resolved studies of ionised gas and stellar feedback at parsec scales in a nearby spiral galaxy.

The dataset has been used to identify and characterise 131 H II regions within the mosaic footprint through dendrogram analysis. The data product and the associated nebular catalogue (published at CDS), including integrated emission-line fluxes and derived physical properties, are presented in Feltre et al. (A&A, 706, A367, 2026).

Users can query and download the data via the ESO Archive Science Portal or through programmatic access.
The DOI assigned to this data collection is doi.org/10.18727/archive/108 , and further details are available in the release description.

The nebular catalogue is accessible from CDS at: J/A+A/706/A367.