Very high zenith angle observations of the Crab Nebula with the MAGIC telescopes.
The MAGIC telescopes exploit the cosmic gamma rays impacting our atmosphere to monitor the night sky at very high energies. These particles generate electromagnetic showers, which cause the emission of Cherenkov radiation measured by MAGIC. Shower properties change when shifting from zenith to horizon, which enables the detection of the highest-energy particles. This particular research focuses on the largest zenith angle observations with the MAGIC telescopes, as well as on the technical improvements needed to optimise the data analysis. This will allow us to understand relevant systematics in such conditions, and in perspective, to enhance our sensitivity and to improve science results.