We present spatially resolved spectroscopic observations of the planetary nebula NGC 6720, the Ring Nebula, taken during the science verification phase of WEAVE, a new instrument mounted on the William Herschel Telescope on La Palma. We use the instrument's Large Integral Field Unit (LIFU) to obtain spectra of the Ring Nebula, covering its entire

We propose a focal-plane wavefront sensor (FPWFS) based on a short multimode fiber (MMF). By coupling the aberrated focal-plane field into an MMF of length 1 cm, we preserve modal interference over a 10 nm bandwidth at near-infrared wavelengths, but broader bandwidths could be achieved by appropriately tuning the fiber length. The resulting output

Context. The flat spectrum radio quasar (FSRQ) OP 313 was discovered in December 2023 in very-high-energy γ rays above 100 GeV, enabling for the first time a complete broadband characterization of its emission. However, the lack of updated measurements of its accretion disc, broad line region, and dusty torus hampers a detailed interpretation of