<?xml version="1.0" encoding="UTF-8"?>
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    xsi:schemaLocation="http://pds.nasa.gov/pds4/pds/v1 https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1J00.xsd">
    <Identification_Area>
        <logical_identifier>urn:nasa:pds:context:facility:observatory.lowell</logical_identifier>
        <version_id>1.5</version_id>
        <title>Lowell Observatory</title>
        <information_model_version>1.19.0.0</information_model_version>
        <product_class>Product_Context</product_class>
        <Alias_List>
            <Alias>
                <alternate_id>Mars Hill</alternate_id>
            </Alias>
            <Alias>
                <alternate_id>Anderson Mesa Station</alternate_id>
            </Alias>
            <Alias>
                <alternate_id>Happy Jack</alternate_id>
            </Alias>
        </Alias_List>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2016-04-04</modification_date>
                <version_id>1.0</version_id>
                <description>Initial version exported from OLAF</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2019-01-23</modification_date>
                <version_id>1.1</version_id>
                <description>Added connection to telescopes and alternate site names associated with Lowell Observatory</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2021-08-13</modification_date>
                <version_id>1.2</version_id>
                <description>A.C.Raugh added Lowell Discover Telescope reference</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2023-03-02</modification_date>
                <version_id>1.3</version_id>
                <description>Added reference to nuro_0m79</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2024-05-08</modification_date>
                <version_id>1.4</version_id>
                <description>Added references to previously overlooked hall_ritchey-chretien_1_1m07 and loneos_0m60</description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2024-05-09</modification_date>
                <version_id>1.5</version_id>
                <description>Updated description, alphabetized and added comment to every telescope</description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    <Reference_List>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:lowell.21in0</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>Mars Hill</comment>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:lowell.discovery_4m3</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>Happy Jack</comment>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:lowell.hall_ritchey-chretien_1_1m07</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>Anderson Mesa Station</comment>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:lowell.loneos_0m60</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>Anderson Mesa Station</comment>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:lowell.nuro_0m79</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>Anderson Mesa Station</comment>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:lowell.perkins_warner1m83</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>Anderson Mesa Station</comment>
        </Internal_Reference>
    </Reference_List>
    <Facility>
        <name>Lowell Observatory</name>
        <type>Observatory</type>
        <address>Lowell Observatory
                                      P.O. Box 1269
                                      1400 West Mars Hill Road
                                      Flagstaff, Arizona</address>
        <country>USA</country>
        <description>
            Lowell Observatory, established in 1894 west of Flagstaff, Arizona, was founded by Percival Lowell. 
            The observatory consists of multiple buildings and telescopes on multiple sites including Mars Hill, Anderson Mesa, 
            and Happy Jack.
        </description>
    </Facility>
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