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

StarSense Explorer 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.

High Quality Altazimuth Mount with Slow Motion Control

An ultra-stable altazimuth mount provides a sturdy foundation for StarSense Explorer DX. Slip clutches and geared slow motion controls in both axes help you move the telescope smoothly and zero in your target. As celestial objects appear to drift across the night sky, you’ll be able to follow them with just a turn of the knobs. It’s all anchored by an adjustable, full-height tripod.

Dazzling Views with High Quality Optics

With a large 102mm (4”) objective lens, this telescope has enough light gathering ability to bring out impressive detail in celestial objects. You can expect sharp, bright views of Jupiter’s four Galilean moons, its cloud bands and Great Red Spot, the rings of Saturn, the trapezium in the Orion Nebula, and beautiful Pleaides Open Star Cluster. Celestron’s XLT optical coatings improve light transmission, enhancing the views even more.  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. With this 4” refractor and relatively dark skies, the Andromeda Galaxy, Hercules Open Star Cluster, and so many more are easily within your reach.

The entire telescope kit weighs just 14.2 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 DX, you’ll find:

• 102mm refractor optical tube
• StarSense dock for your smartphone
• Low powered (25mm) and high powered (10mm) 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 controls
• Full-height tripod with an accessory tray to keep you organized

 All products sold by Focalpoint online and by Mail Order are covered by a 14 Day "Cooling Off" period.

We additionally allow No-Fault returns beyond this subject to a restocking charge at our discretion.

You must notify us of a Return within 7 days of receiving your item/items by visiting our Returns Portal and requesting a return, once approved you must return your item within 7 days.

We strongly recommend you use our Prepaid Return Courier and that you insure your return against loss or damage as we accept no liability for items returned damaged or that are lost.

Provided your return qualifies, is within the "Cooling Off" Period and is returned in a satisfactory condition your return will be processed in line with all current Consumer Rights Regulations.

Our Terms & Conditions can be found >HERE<

Our FAQs can be found >HERE<

Our Returns Portal can be found >HERE<

 We understand sometimes things go wrong or you change your mind and you may need to return an item.

With just a few clicks our Returns Portal will find your order details and guide you through the return process in under 60 seconds.

Once we have your order details and you have selected your return reason and selected our prepaid label or your own courier, our system will take over and keep you updated of the progress of your return from Courier Acceptance to Delivery to our Returns Department, to your final resolution (Exchange, Repair, Upgrade or Full/Partial Refund).

All you need to do is parcel up your item in secure packaging and follow the instructions provided.

The Returns Portal can be found >HERE<

 Update Date 31/10/2025

Smartphone Compatibility

StarSense Explorer works with most modern smartphones; it is compatible with Android 12 and later, as well as iOS 18 and newer, including iPhone XR and newer models. Users with older phones can still use this app , butwill not be able to reinstall the app if they uninstall it. For a complete compatibility list, clickhere.

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