The High Angular Resolution Monolithic Optical and Near-infrared Integral field spectrograph (HARMONI) is a first generation instrument designed for the Extremely Large Telescope (ELT). HARMONI offers operational versatility, enabling both seeing-limited (NOAO) operation and compensation for atmospheric optical turbulence using two systems: Single

Context. Open clusters provide valuable information on stellar nucleosynthesis and the chemical evolution of the Galactic disk, as their age and distances can be measured more precisely with photometry than in the case of field stars. Aims: Our aim is to study the chemical distribution of the Galactic disk using open clusters by analyzing the

Ultra-diffuse galaxies (UDGs) have been one of the latest hypes in the extragalactic community. Although discovered a few decades ago, only recently we have had the opportunity to start grasping their nature thanks to deep photometric observations and, more challengingly, spectroscopic ones. From different properties ranging from their dark matter

Accretion onto compact objects, such as black holes and neutron stars, is one of the most powerful processes in the Universe, involving large exchanges of mass and energy. Among the astrophysical systems where this phenomenon is observed, X-ray binaries are particularly relevant due to their relatively short timescales of evolution, which are

NIRPS is a fiber-fed AO nIR spectrograph working simultaneously with HARPS at the La Silla-ESO 3.6m telescope. The cryogenic spectrograph operating at 75K employs a cross-dispersed echelle grating (R4), covering a wavelength range of 0.98-1.80 microns in a single image using a Teledyne Hawaii-4RG infrared detector. In early 2022, the NIRPS

The Near-InfraRed Planet Searcher or NIRPS is a precision radial velocity spectrograph developed through collaborative efforts among laboratories in Switzerland, Canada, Brazil, France, Portugal and Spain. NIRPS extends to the 0.98-1.8 μm domain of the pioneering HARPS instrument at the La Silla 3.6-m telescope in Chile and it has achieved