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    Bortle 4

    Rockport Dark-Sky Preserve

    Michigan, United States45.2100°, -83.4100°Peak altitude 16°11.6h peak darknessBest: May, Jul, Jun, Apr, Aug, Mar, Sep, Feb

    Milky Way Calendar

    Nightly visibility ratings for Rockport Dark-Sky Preserve

    Recognition

    Year designated

    2016

    Recognized by

    Michigan legislation

    DSAG class

    2c

    Area

    1,715 ha

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