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  1. 1
    The NexStar Evolution and SkyPortal User's Guide
    by Chen, James L., Chen, Adam
    Published 2016
    Table of Contents: “… -- Appendix 2: Celestron Timeline -- Appendix 3: Celestron NexStar Evolution Schmidt-Cassegrain Telescope…”
    Full Text via HEAL-Link
    Electronic eBook
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