The Fast Fourier Transform Spectrometer (XFFTS) for Effelsberg is available for observations since late 2011. The backend has 32768 channels in each of the two IF inputs so that for 2 channel receivers both polarisations can be sampled and processed in parallel.
Currently the following modes are available:
Bandwidth | Spectral channels | Effective Spectral Resolution [kHz] | IF |
---|---|---|---|
500 | 32768 | 17.7 | VLBA-IF |
100 | 32768 | 3.5 | VLBA-IF / Narrow-Band-IF |
50 | 65536 | 0.8 | Narrow-Band-IF - special mode |
2000 | 32768 | 70.8 | Special Broad-Band-IF - currently not available |
Note, that the effective bandwidths are about 10% smaller due to bandpass issues!