Celestron Royal Observatory Greenwich StarSense Explorer DX 100AZ Smartphone App-Enabled Refractor Telescope

Celestron Royal Observatory Greenwich StarSense Explorer DX 100AZ Smartphone App-Enabled Refractor Telescope

Celestron Royal Observatory Greenwich StarSense Explorer DX 100AZ Smartphone App-Enabled Refractor Telescope

Dock your smartphone on the award-winning app-enabled Celestron Royal Observatory Greenwich StarSense Explorer DX 100AZ Refractor Telescope and quickly navigate the night sky, ideal for beginners, it includes 25mm & 10mm eyepieces and the Celestron Starry Night software.

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Product details

Bar Code:  050234224673
Part Number:  22467-CGL
Brand:  Celestron
Skill Level  Beginner
Aperture  102 mm
Mount Type  Manual Alt-Azimuth
Focal Length  660 mm
Optical Design  Refractor
Warranty  2 Years


With this special edition Celestron Royal Observatory Greenwich StarSense Explorer DX 100AZ Smartphone App-Enabled Refractor Telescope, locating objects has never been easier, faster, or more accurate and is the latest collaboration between Celestron and the Royal Observatory, Greenwich. Within minutes of setting up the telescope, you can be navigating the sky with confidence. 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), the StarSense Explorer generates a list of celestial objects currently visible. Make your selection, and arrows appear onscreen, guiding you as you move the telescope. When the object is ready to view, the bullseye turns green.

The 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.

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.

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.

With a large 100mm objective lens, this telescope has enough light gathering ability to bring out 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 the beautiful Pleiades 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.

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 6.44 kg, so it's perfectly portable and easy to bring on your next camping trip or to a remote observing site.

Greenwich's Royal Observatory: A Brief Overview
King Charles II granted the Royal Observatory's charter in 1675, and it is now housed in London's Greenwich Park. In the history of astronomy and navigation, the observatory has been crucial. The observatory's current focus is on enhancing people's knowledge of the sea, space exploration, and Britain's place in world history.

- 100mm 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 organised

Technical Specifications:
Optical Design: Refractor
Aperture: 100mm
Focal Length: 660mm
Focal Ratio: f/6.5
Focal Length of Eyepiece 1: 25mm
Magnification of Eyepiece 1: 26x
Focal Length of Eyepiece 2: 10mm
Magnification of Eyepiece 2: 66x
Barlow Lens: None
Finderscope: StarPointer red dot finderscope
Optical Tube: Aluminium
Highest Useful Magnification: 240x
Lowest Useful Magnification: 15x
Limiting Stellar Magnitude: 12.5
Resolution (Rayleigh): 1.37 arc seconds
Resolution (Dawes): 1.14 arc seconds
Light Gathering Power (Compared to human eye): 212x
Optical Coatings: Fully XLT Coated glass optics
Optical Tube Length: 812.8mm
Optical Tube Diameter: 118mm
Mount Type: Manual Alt-Azimuth
Height adjustment range (includes mount and tripod): Aluminium, 1244.6mm max height
Tripod Leg Diameter: N/A
Accessory Tray: Yes
Slew Speeds: Manual
GPS: Uses phone's GPS
Dovetail Compatibility: CG-5 Dovetail bar
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: 6.44 kg

Note: Smartphone shown in images is not included.

About the Starsense Explorer Range

Have you ever looked up at the night sky and wished you knew more about what you were seeing?

When combined with a smartphone and the StarSense Explorer app, the Celestron StarSense Explorer series of telescopes can easily track the sky and provide a real-time pointing guide to celestial objects. The StarSense app uses your phone's camera and sensors to create an augmented-reality view, allowing you to discover stars, planets, and other objects with ease.

Once you have located an object, the telescope's mount and motorised system automatically adjust to keep it in view, making this range a great option for beginners or anyone who wants to spend more time observing and less time searching for objects. With the Celestron StarSense Explorer, exploring the wonders of the night sky has never been more convenient or exciting.

Popular in this range

Top-selling telescopes in the StarSense Explorer range include the Explorer LT 127AZ reflector telescope and the LT 70AZ refractor telescope. 

Popular new additions to the range include the StarSense Explorer 8" Dobsonian Telescope and the StarSense Explorer 150MM Tabletop Dobsonian Telescope.

Recommended by PicStop

Our recommendation from the StarSense Explorer range would be the StarSense Explorer DX 130AZ, which is simple to use with the Starsense app - ideal for beginners and experienced astronomers alike. 

Worth a mention are the Royal Observatory Greenwich StarsSense Explorer DX 100AZ and the latest version of the StarSense Explorer 130MM Tabletop Dobsonian Telescope.

Looking for ideas or guidance?

Not sure where to start? Drop us a line with your telescope questions and we'll be happy to help. Call us on 01624 670005 or contact us here.

You can browse alternative Celestron telescope ranges here or visit our main Telescopes Category to shop a huge selection of telescopes by brand or by type.

Looking for alternatives to Celestron? Visit our brands page to browse similar telescope ranges from Skywatcher, Meade and National Geographic.

Is the product in stock?

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Boxed Dimensions (LxWxH cm): 101.6 / 22.86 / 43.18 / - Weight (g) Boxed/Un-Boxed: 10432.62 / 6441
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