Celestron has reinvented the manual telescope with the StarSense Explorer - the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time. The StarSense Explorer is ideal for beginners thanks to its user-friendly interface and detailed tutorials. It's like having your own personal guide to the night sky.

Dock, launch, explore:
Leave complicated star charts, imprecise planetarium programs, and computerized mounts behind. With the StarSense Explorer, finding objects has never been easier, faster, and more accurate. Within minutes of setting up the telescope, you can begin moving confidently in the sky.

Simply place your phone in the unique StarSense Dock and launch the StarSense Explorer app. After aiming your phone at the telescope's optics (which can be done in two minutes), the StarSense Explorer generates a list of currently visible celestial objects. Make your selection, and arrows appear on the screen to help you move the telescope. When the object is visible in the eyepiece, the crosshairs turn green.

Smartphone compatibility:
StarSense Explorer works with most current smartphones, including iPhone 6 and newer and most devices running Android 7.1.2 or higher manufactured since 2016. For a full compatibility list, click here .

Patent pending StarSense Sky 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), the same algorithm used by orbiting satellites to correctly reorient themselves, helps the app match the star patterns it detects with its internal database.

While other astronomy apps claim to help you find objects, they rely solely on the phone's compass, gyroscopes, and accelerometers, which are not as accurate as LISA's technology. No other app can tell you exactly when your target will be visible in the eyepiece.

Robust azimuthal mount:
The StarSense Explorer LT's intuitive alt-azimuth mount makes it easy to point the telescope at the target. A fine adjustment knob for the altitude axis helps you fine-tune the telescope to the object and track targets as the Earth rotates beneath the night sky. Everything is mounted on a large, height-adjustable tripod.

Perfect views with high-quality optics:
With its large 102mm (4") objective lens, this telescope has enough light gathering power to see impressive details in celestial objects. You can expect sharp, bright views of Jupiter's four Galilean moons, its cloud bands, and its Great Red Spot, as well as the rings of Saturn and the Trapezium stars in the Orion Nebula. Don't miss the beautiful Pleiades open star cluster! Celestron's XLT coating improves light transmission, making details in celestial objects more clearly visible.

Perfect for the city as well as dark locations:
Even if you live in a place with slightly bright skies and moderate light pollution, the StarSense Explorer is powerful enough to locate Jupiter, Saturn, Venus, the Orion Nebula, binary stars, and some of the most famous celestial objects.

However, if you can move the telescope to a slightly darker location, even more objects will become visible. With this 4-inch refractor and relatively dark skies, the Andromeda Galaxy, the globular cluster M13 in Hercules, and many others are easily visible.

The entire telescope weighs only 6.4kg, making it perfectly portable and easy to take with you on your next camping trip or to a remote observing site.

Spec:

• Optical Design: Refractor
  
• Resolution (DAWES): 1.14 arcseconds
  
• Resolution (RAYLEIGH): 1.37 arcseconds
  
• Focal length: 660mm (25.98")
  
• Limit size: 12.5
  
• Highest useful magnification: x240
  
• Light gathering capacity (compared to the human eye): x212
  
• Lowest useful magnification: x15
  
• Telescope aperture: 102mmmm (4.01")
  
• Tube (material): Aluminium
  
• Tube weight: 2.66kg
  
• Tube size (max): 118mm (4.64")
  
• Tube length: 609.6cm (24")
  
• Fully coated XLT glass optics
  
• Aperture ratio: f/6.5

Mount Spec:

• Alignment Methods: StarSense Explorer App
  
• Mount type: Azimuthal mount (manual)
  
• Mount control: Manual
  
• Dovetail: CG-5 dovetail rail
  
• Dovetail compatible: CG-5 dovetail rail
  
• Panning speed: Manually
  
• Features: StarSense Explorer App, SkyPortal App, Celestron Starry Night Basic Edition Software

Whats included:

1. Focal length eyepieces: 25mm, 10mm
   Incl. accessories: Telescope tube, Mount/Tripod (pre-assembled) , Amici prism for an upright and laterally correct image, StarPointer finder scope, Accessory tray, StarSense Explorer Smartphone Dock.
   
2. Viewfinder: StarPointer™ Finderscope
   
3. Zenith prism: Straightens the image by 90° and displays it correctly (1.25")
   
4. Accessory tray: Yes