The NexStar Evolution and SkyPortal User's Guide (The Patrick Moore Practical Astronomy Series): Chen, James L., Chen, Adam: 9783319325385: Amazon.com: Books
Celestron SkyPortal on the App Store
Celestron StarSense: Set-Up, Alignment, & Calibration with SkyPortal - YouTube
SkyPortal Apk Download for Android- Latest version 3.4.4.0- com.celestron. skyportal
Amazon.com : Celestron - SkyPortal WiFi Module - Control Your Celestron Computerized Telescope via Smartphone - Telescope Wi-Fi Accessory : Electronics