EDP Sciences
Free access
Volume 436, Number 1, June II 2005
Page(s) 391 - 395
Section Instruments, observational techniques, and data processing
DOI http://dx.doi.org/10.1051/0004-6361:20042227

A&A 436, 391-395 (2005)
DOI: 10.1051/0004-6361:20042227

Research Note

A field programmable gate array spectrometer for radio astronomy

First light at the Effelsberg 100-m telescope
S. Stanko1, B. Klein2 and J. Kerp1

1  Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
    e-mail: [stanko;jkerp]@astro.uni-bonn.de
2  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
    e-mail: bklein@mpifr-bonn.mpg.de

(Received 21 October 2004 / Accepted 22 February 2005)

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.

Key words: instrumentation: spectrographs -- techniques: spectroscopic

© ESO 2005