Astronomy & Astrophysics

Table 1: Definition of the active optical elements in FLASH (f is the focal length, e the eccentricity, and c the linear eccentricity of the individual mirror).
Table 2: Bandwidth and resolution of both FLASH receiver channels, as well as the beam width on the sky and the main beam efficiency $\eta _{\rm mb}$ of the telescope (Güsten et al. 2006).