Telescope, 70mm, 2.7in, Refractor, Starsense, Celestron


  • With the The Celestron STARSENSE EXPLORER™ LT 70AZ – Celestron has reinvented the manual telescope with StarSense Explorer—the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time.

  • StarSense Explorer is ideal for beginners thanks to the app’s user-friendly interface and detailed tutorials.

  • It’s like having your own personal tour guide of the night sky.

    Dock, Launch, Explore

    Leave complicated star charts, imprecise planetarium apps, and computerized mounts behind.

  • With StarSense Explorer, locating objects has never been easier, faster, or more accurate.

  • Within minutes of setting up the telescope, you’ll be navigating the sky with confidence.

  • Simply place your phone in the unique StarSense dock and launch the StarSense Explorer app.

  • After aligning your phone to the telescope’s optics (a quick, 2-minute procedure), StarSense Explorer generates a list of celestial objects currently visible.

  • Make your selection and arrows appear onscreen, guiding you as you to move the telescope.

  • When the object is ready to view, the bullseye turns green.

    Smartphone Compatibility

    StarSense Explorer works with most modern smartphones, including iPhone 6 and up and most devices running Android 7.1.2 or later manufactured since 2016. For a complete compatibility list, click here.

    Patent-Pending StarSense Sky Recognition Technology

    The Celestron STARSENSE EXPLORER™ LT 70AZ uses patent-pending technology and your smartphone to determine exactly where the telescope is pointed in the night sky.

  • A Lost in Space Algorithm (LISA), like the ones satellites use in orbit to correctly reorient themselves, helps the app match star patterns it detects overhead to its internal database.

    While other astronomy apps may claim that they can help you find objects, they rely exclusively on the phone’s gyros and accelerometers, which aren’t as accurate as LISA technology.

  • No other app can accurately tell you when your target is visible in the eyepiece.

    Sturdy Altazimuth Mount

    StarSense Explorer LT’s simple altazimuth mount makes it easy to move the telescope to find your target.

  • A slow-motion altitude adjustment knob helps you fine tune the telescope’s pointing position and follow targets as they appear to drift across the night sky.

  • It’s all anchored by an adjustable, full-height tripod.

    Dazzling Views with High Quality Optics

    You can expect sharp, bright views through this 70mm refractor.

  • Fully coated glass optics provide increased light transmission, enhancing details in celestial objects.

  • The telescope also includes a 90-degree erect image diagonal, so you can use it during the day to view birds, wildlife, landscapes, and more.

    Perfect for the City or Dark Sky Sites

    Even if you live in a light polluted city location, StarSense Explorer is advanced enough to be able to pick out Jupiter, Saturn, Venus, the Orion Nebula, double stars, and a few more of the most famous celestial objects.

    But if you can take the telescope to an even slightly darker location, more objects will become visible.

  • The entire telescope kit weighs just 7.4 pounds, so it’s perfectly portable and easy to bring on your next camping trip or to a remote observing site.

    Everything You Need to Observe Immediately

    When you unbox your new StarSense Explorer LT, you’ll find:

    • 70mm refractor optical tube
    • StarSense dock for your smartphone
    • Low powered (25mm) and high powered (10mm) eyepiece
    • 2x Barlow lens to double the power of each eyepiece
    • 90-degree erect image diagonal
    • StarPointer red dot finderscope, perfect for using the telescope during the day or without the StarSense Explorer app
    • Altazimuth mount with slow motion control rod
    • Full-height tripod with an accessory tray to keep you organized


    Optical Design: Refractor
    Aperture: 70mm
    Focal Length: 700mm
    Focal Ratio: f/10
    Focal Length of Eyepiece 1: 25mm
    Magnification of Eyepiece 1: 28x
    Focal Length of Eyepiece 2: 10mm
    Magnification of Eyepiece 2; 70x
    Barlow Lens: 2x (1.25″)
    Finderscope: StarPointer™ red dot finderscope
    Star Diagonal: Erect image 90° (1.25″)
    Optical Tube: Aluminum
    Highest Useful Magnification: 165x
    Lowest Useful Magnification: 10x
    Limiting Stellar Magnitude: 11.7
    Resolution (Rayleigh): 1.99 arc seconds
    Resolution (Dawes): 1.66 arc seconds
    Light Gathering Power (Compared to human eye): 100x
    Optical Coatings: Fully-Coated glass optics
    Optical Tube Length: 812.8mm
    Optical Tube Diameter: 76mm
    Optical Tube Weight: 1.63 kg
    Dovetail: None
    Mount Type: Manual Alt-Azimuth
    Height adjustment range (includes mount and tripod): 1320.8mm max height
    Tripod Leg Diameter: 31.75mm steel
    Accessory Tray: Yes
    Tripod Weight: 1.72 kg
    Slew Speeds: Manual
    GPS: Uses phone’s GPS
    Dovetail Compatibility: CG-5 Dovetail bar
    Power Requirements: None
    Alignment Procedures: Use StarSense Explorer app
    Software: StarSense Explorer app | SkyPortal app | Celestron Starry Night Basic Edition Software
    Total Kit Weight: 3.35 kg
    Included Items: Telescope tube | Mount/tripod (preassembled) | 25mm & 10mm eye pieces.