<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1L00.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>

<Product_Context xmlns="http://pds.nasa.gov/pds4/pds/v1"
    xmlns:pds ="http://pds.nasa.gov/pds4/pds/v1" 
    xmlns:ctli="http://pds.nasa.gov/pds4/ctli/v1"
    xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation=
    "http://pds.nasa.gov/pds4/pds/v1  https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1L00.xsd">
    
    <Identification_Area>
        <logical_identifier>urn:nasa:pds:context:telescope:parkes.dss49_64m</logical_identifier>
        <version_id>1.0</version_id>
        <title>Parkes 64-m Radio Telescope (as a DSN Antenna)</title>
        <information_model_version>1.21.0.0</information_model_version>
        <product_class>Product_Context</product_class>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2024-05-19</modification_date>
                <version_id>1.0</version_id>
                <description>
                    Original context file for the Murriyang 64-m radio telescope at Parkes Observatory (Australia).
                </description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    
    <Reference_List>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:facility:observatory.dsn</lid_reference>
            <reference_type>telescope_to_facility</reference_type>
            <comment>
                This context product provides information about the NASA Deep Space Network as a whole.
                The Murriyang 64-m telescope at Parkes was used occasionally as part of the DSN.
            </comment>
        </Internal_Reference>
        
        <External_Reference>
            <reference_text>https://www.parkes.atnf.csiro.au/</reference_text>
            <description>
                An overview of the Parkes Observatory, which is part of the Australia Telescope National Facility.
                The overview is contemporary -- that is, ca. 2024.
            </description>
        </External_Reference>
    </Reference_List>
    
    <Telescope>
        <aperture unit='m'>64</aperture>
        <telescope_longitude unit='deg'>148.2635101</telescope_longitude>
        <telescope_latitude unit='deg'>-32.9984064</telescope_latitude>
        <telescope_altitude unit='m'>410.80</telescope_altitude>
        <coordinate_source>WGS84</coordinate_source>
        <description>
           This fully steerable telescope is a parabolic reflector radio antenna that is occasionally used
           as part of the NASA Deep Space Network. It can be pointed over elevation angles 30.5-88.5 degrees 
           at all azimuths with an accuracy of better than 1 arcsecond. It is part of the Australia Telescope 
           National Facility, is used at frequencies up to 43 GHz, and was first operational in 1961.
        </description>
    </Telescope>
    
</Product_Context>
