Radio Astronomy Backends

This page describes the backends available for passive radio astronomy observations. Back-ends for the planetary radar and for the atmospheric science instruments are not described here.

PUPPI – The Puerto Rico Ultimate Pulsar Processing Instrument, for single-pixel pulsar observations.

The Mock Spectrometers for spectral line and pulsar observing using the full 300 MHz bandwidth of ALFA and

The WAPP Correlators for pulsar and spectral line observations giving 100-MHz chunks of the full bandwidth of ALFA.

The GALFA Spectrometers – for Galactic HI observations with ALFA.

The Mark5A and Mark5C – backends for VLBI observations.

The Interim Correlator – an older single-pixel backend providing 4 boards with up-to 50 MHz bandwidth each.

Continuum Observing with the Radar Interface – it is normally recommended that for continuum observations one of the spectral-line backends is used. This system is used to provide a continuum total-power record for VLBI observations.