Design of UHECR telescope with 1 arcmin resolution and 50° field of view

A new telescope design based on Baker–Nunn optics is proposed for observation of ultra-high-energy cosmic rays (UHECRs). The optical system has an image resolution better than 0.02° within a wide field of view of 50° angular diameter. When combined with a high-quality imaging device, the proposed design enables the directions of UHECRs and high-energy neutrinos to be determined with an accuracy better than 1 arcmin. The outstanding resolution of this telescope allows charge-separated cosmic-rays to be resolved and the source to be determined accurately. This marked improvement in angular resolution will allow the multi-wavelength and “multi-particle” observations of astronomical objects through collaboration with established astronomical observations.