A Field Programmable Gate Array Spectrometer for Radio Astronomy
  We describe the technological concept and the first-light results of a 1024-channel spectrometer based on field programmable gate array (FPGA) hardware. This spectrometer is the prototype for the seven beam L-band receiver to be installed at the Effelsberg 100-m telescope in autumn 2005. Using "of-the-shelf" hardware and software products, we designed and constructed an extremely flexible Fast-Fourier-Transform (FFT) spectrometer with unprecedented sensitivity and dynamic range, which can be considered prototypical for spectrometer development in future radio astronomy. 
S. Stanko (1), B. Klein (2), J. Kerp (1) ((1) Radioastronomisches   Institut, University of Bonn, (2) Max Planck Institute f...