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 orient 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 few turns of the knobs. It’s all anchored by an adjustable, full-height tripod.

Dazzling Views with High Quality Optics

With a large 5” Schmidt-Cassegrain optical tube—Celestron’s tried-and-true optical design for over 50 years—this telescope has enough light gathering ability to bring out impressive detail in celestial objects while remaining compact and lightweight. 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 the beautiful Pleaides Open Star Cluster.

All air-to-glass surfaces are coated with our StarBright XLT optical coatings to visibly increase contrast and light transmission for brighter deep space views. With StarBright XLT, you’ll be able to discern subtle details while viewing the Moon and planets as well as faint galaxies and nebulae. For more information about our patented StarBright XLT coatings, visit here.

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 5” Schmidt-Cassegrain and relatively dark skies, the Andromeda Galaxy, Hercules Open Star Cluster, and so many more are easily within your reach.

• No Telescope Experience Required
• Patent-pending Starsense Sky Recognition Technology

• Optical Design: Schmidt-Cassegrain
• Aperture: 125mm (5")
• Focal Length: 1250mm (49.21")
• Focal Ratio: f/10
• Focal Length of Eyepiece 1: 25mm (0.98")
• Magnification of Eyepiece 1: 50x
• Focal Length of Eyepiece 2: 10mm (0.39")
• Magnification of Eyepiece 2: 150x
• Barlow Lens: Not Included
• Finderscope: StarPointer™ red dot finderscope
• Star Diagonal: Erect image 90° (1.25")
• Optical Tube: Aluminum
• Highest Useful Magnification: 295x
• Lowest Useful Magnification: 18x
• Limiting Stellar Magnitude: 13
• Resolution (Rayleigh): 1.11 arc seconds
• Resolution (Dawes): 0.93 arc seconds
• Light Gathering Power (Compared to human eye): 329x
• Secondary Mirror Obstruction: 51mm (2.0")
• Secondary Mirror Obstruction by Diameter: 16.6%
• Secondary Mirror Obstruction by Area: 40%
• Optical Coatings: StarBright XLT
• Optical Tube Length: 330mm (13")
• Optical Tube Diameter: 171.45mm (6.75")
• Optical Tube Weight: 5 lbs (2.26 kg)
• Dovetail CG-5 Dovetail Bar
• Mount Type: Manual Alt-Azimuth
• Height adjustment range (includes mount and tripod): Aluminum, 1320.8mm (52") max height
• Tripod Leg Diameter: 31.75mm (1.25") steel
• Accessory Tray: Yes
• Tripod Weight: 3.8 lbs (1.72 kg)
• Slew Speeds: Manual
• GPS: Uses phone's GPS
• Dovetail Compatibility: CG-5
• Power Requirements: None (Recommend PowerTank Glow to keep phone charged while using App)
• Alignment Procedures: Use StarSense Explorer App
• Software: StarSense Explorer App | SkyPortal App | Celestron Starry Night Basic Edition Software
• Total Kit Weight: 9 lbs (4.08 kg)

• Celestron Starsense Explorer Dx 5 Inches Smartphone App Telescope
• Mount and Tripod (Preassembled)
• 25mm and 10mm Eyepieces
• Erect Image Diagonal  
• Starpointer Finderscope 
• Accessory Tray 
• Starsense Explorer Phone Dock

Delivery Time
Usually items despatched within 24 hours after payment has been  received also  Items can be collected from our retail shop  in London.
Deliveries sent by Royal Mail, DPD and UPS (UPS only for Out   Side UK) Standard, Recorded, Special and International Tracked &   Signed for depends upon item or as per customer request.
If item gets lost in the post (very Rare), buyers must wait 15   working days for UK & Ireland and at least 21 working days for   International after item was despatched before the item can not   be declared lost as per courier policy. 
If Still not arrived after this time we will provide a   replacement (or a refund if no further stocks are available).

Postage discount is available on all items (Multiple Purchase).

Buyer can return an item within 30 days after purchase date UK   and 30 days for international.
Buyer must contact within 14 days after purchase date for UK and   20 days for international to Return an item.
Full refunds will be given if the item is faulty or is not as   described.
Item must be return in the same condition as it was sent.
If a customer return an item due to Order by mistake or does not   like it then postage cost will be deducted. 
Return item via eBay.

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