.. _backends:

########
Backends
########

VEGAS is the backend for spectral line observing. VEGAS can also be used for pulsar observing (VEGAS Pulsar Modes, VPM). The Cyclic Spectroscopy backend can also be used for Pulsar observations. The GBT has two continuum backends: The Digital Continuum Receiver (DCR) and the Caltech Continuum Backend (CCB).  There is a single dish mode for the Very Long Baseline Array (VLBA) backend that is available for high time-resolution observations. Planetary radar uses a specialized backend.

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        **VErsatile GBT Astronomical Spectrometer (VEGAS)** 

        Spectral line backend.

        .. button-link:: backends/vegas.html
            :color: primary
            :tooltip: VEGAS
            :outline:
            :click-parent:

            VEGAS


            
.. toctree::
    :maxdepth: 3
    :hidden:

    backends/vegas


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        **VEGAS Pulsar Modes (VPM)** 

        Pulsar observing modes using VEGAS

        .. button-link:: backends/vpm.html
            :color: primary
            :tooltip: VPM
            :outline:
            :click-parent:

            VPM

	    
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        **Cyclic Spectroscopy (CS)** 

        Cyclic spectroscopy backend

        .. button-link:: backends/cycspec.html
            :color: primary
            :tooltip: CS
            :outline:
            :click-parent:

            CS





.. toctree::
    :maxdepth: 3
    :hidden:

    backends/vpm
    backends/cycspec
    

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        **Digital Continuum Receiver (DCR)** 

        Continuum backend

        .. button-link:: backends/dcr.html
            :color: primary
            :tooltip: DCR
            :outline:
            :click-parent:

            DCR

 
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        **CalTech Continuum Backend (CCB)** 

        Continuum backend

        .. button-link:: backends/ccb.html
            :color: primary
            :tooltip: CCB
            :outline:
            :click-parent:

            CCB



.. toctree::
    :maxdepth: 3
    :hidden:
    
    backends/dcr
    backends/ccb


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        **VLBI** 

        .. button-link:: backends/vlbi.html
            :color: primary
            :tooltip: VLBI
            :outline:
            :click-parent:

            VLBI


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        **Radar** 

        .. button-link:: backends/radar.html
            :color: primary
            :tooltip: Radar
            :outline:
            :click-parent:

            Radar


.. toctree::
    :maxdepth: 3
    :hidden:

    backends/vlbi
    backends/radar
            

-------

Retired backends
================


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        **Green Bank Ultimate Pulsar Processing Instrument (GUPPI)** 

        Spectral line backend.

        .. button-link:: backends/guppi.html
            :color: primary
            :tooltip: GUPPI
            :outline:
            :click-parent:

            GUPPI


.. toctree::
    :maxdepth: 3
    :hidden:

    backends/guppi