The ePESSTO+ collection (PI: Inserra, ESO program IDs 1103.D-0328 and 106.216C, instruments EFOSC and SOFI) gathers a detailed spectroscopic follow up of supernovae at the extremes of the known population, e.g. the most luminous, the faintest, the fast declining, etc.

This second release contains 1215 spectra for 689 objects, observed from October 2021 to June 2023, with related 602 infrared images. It uses standard EFOSC2 setups with resolutions of 13-17Å between 3680-10320Å, SOFI spectroscopy for brighter science targets, with the blue and red (rarely) grisms (resolutions 23Å - 33Å), and SOFI imaging with broadband JHKs filters. The 101 key science targets of this release (see Table 3 of the DR2 release description) complement the 178 of previous release, with 11 key targets being in common (see Table 3 of the DR1 release description).

These 12 GB of data add to the 14GB of the DR1. The data products are available from the ESO Archive Science Portal (preselected here only the DR2 data) or the Programmatic Access (the query shows both DR1 and DR2, but can be easily edited --see comments in the query-- to get only one of the two releases) services, under the collection name ePESSTOplus, though the official collection name remains ePESSTO+.

The DOI assigned to the ePESSTO+ data collection is https://doi.org/10.18727/archive/86.