Celestron Starsense Explorer DX 102 Refractor

With a large 102mm aperture 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.

Smartphone App and Compatibility
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. For a complete compatibility list please visit Phone Compatability

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.

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 and tripod
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.

Optical Tube Info:
Optical Design: Refractor
Aperture: 102mm (4.01")
Focal Length: 660mm (25.98")
Focal Ratio: f/6.5
Focal Length of Eyepiece 1: 25mm (0.98")
Magnification of Eyepiece 1: 26x
Focal Length of Eyepiece 2: 10mm (0.39")
Magnification of Eyepiece 2: 66x
Barlow Lens: Not Included
Finderscope: StarPointer™ red dot finderscope
Star Diagonal: Erect image 90° (1.25")
Optical Tube: Aluminum
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 (32")
Optical Tube Diameter: 118mm (4.64")
Optical Tube Weight: 5 lbs (2.26 kg)
Dovetail: CG-5 Dovetail Bar

Mount Info:
Mount Type: Manual Alt-Azimuth
Height adjustment range (includes mount and tripod): Aluminum, 1244.6mm (49") max height
Tripod Leg Diameter: N/A
Accessory Tray: Yes
Tripod Weight: 9.2 lbs (4.17 kg)
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: 14.2 lbs (6.44 kg)

Included Items:
Optical tube | Mount and tripod (preassembled) | 25mm and 10mm eyepieces | Erect image diagonal | StarPointer finderscope | Accessory tray | StarSense Explorer phone dock