Celestron StarSense Explorer 10" Smartphone app-enabled dobsonian telescope

The Celestron StarSense Explorer 10" Dobsonian puts serious deep-sky performance within reach without making the telescope complicated to use.

Its large 254mm parabolic primary mirror collects enough light to make galaxies, nebulae and star clusters a major part of your observing rather than occasional targets. Fainter objects become easier to detect, rich clusters reveal more stars, and brighter nebulae and galaxies offer greater opportunity to see structure and subtle differences in brightness.

That same aperture delivers impressive performance on the Moon and planets, with the resolving ability to reveal fine detail when atmospheric conditions allow.

StarSense Explorer then tackles one of the biggest challenges of owning a telescope with this much capability: finding all those objects. Choose a target in the app and follow the on-screen guidance as you manually move the telescope towards it. You retain the simplicity and direct eyepiece experience of a traditional Dobsonian, while your smartphone helps you navigate the sky.

Despite its substantial 254mm aperture, the solid optical tube is approximately 1.12m long. The telescope separates into the optical tube and floor-standing Dobsonian base for carrying and storage, making this a substantial but still practical large-aperture telescope for many households.

For a first-time telescope owner prepared to invest in serious visual capability, the StarSense Explorer 10" offers enormous room to explore. Experienced observers will equally appreciate the combination of large-aperture Dobsonian simplicity and fast, effective smartphone-assisted navigation.

Why Choose the StarSense Explorer 10"?

• Powerful 254mm aperture — see fainter galaxies and nebulae, richer star clusters and impressive lunar and planetary detail.
• StarSense smartphone guidance — makes locating the huge range of objects available to a 10" telescope dramatically easier.
• Serious deep-sky capability — a large mirror gives you far more night sky to explore as your observing experience develops.
• Simple manual Dobsonian operation — no motorised mount or external telescope power supply required.
• Full-size floor-standing design — sits directly on the ground with no table or tripod required.
• 2" Crayford focuser — smooth focusing with support for both 2" and 1.25" eyepieces.
• Two-piece construction — separates into the optical tube and base for carrying and storage.

What Can You See?

The 254mm mirror makes deep-sky observing one of this telescope's great strengths. From New Zealand, Omega Centauri and 47 Tucanae become magnificent fields of densely packed stars, while the Carina Nebula reveals extensive nebulosity against rich southern Milky Way star fields. Planetary nebulae, open clusters and a wide range of galaxies also come within reach, with darker skies allowing the telescope to go deeper still.

On the planets, Saturn's rings are beautifully defined and the Cassini Division can be visible under good conditions. Jupiter reveals its major cloud belts, Galilean moons and finer atmospheric features when seeing permits. Mars can show surface markings when favourably positioned, while the Moon becomes an intricate landscape of craters, mountain ranges, ridges and shadows.

There is also plenty to enjoy from New Zealand towns and cities. The Moon, planets, double stars, clusters and brighter nebulae remain excellent targets. Under darker skies, the 254mm aperture really comes into its own, revealing fainter galaxies and nebulae and more subtle structure within brighter deep-sky objects.

How StarSense Explorer Works

StarSense Explorer uses your smartphone camera together with Celestron's dedicated StarSense dock and mirror to determine where the telescope is pointing.

After an initial alignment, the app analyses the star patterns overhead and shows objects currently available to observe. Choose a target and arrows guide you as you manually move the Dobsonian. When the bullseye turns green, look through the eyepiece.

This is not a motorised GoTo telescope. StarSense tells you where to point; you move the telescope yourself.

That gives you the mechanical simplicity of a traditional Dobsonian without requiring you to master star charts or star-hopping before you can start finding galaxies, nebulae and other deep-sky objects.

Full-Size Dobsonian Design & Other Features

The StarSense Explorer 10" sits on a stable floor-standing Dobsonian base with large altitude bearings, adjustable altitude tension and Teflon azimuth bearings for smooth manual movement.

A panning handle provides a convenient grip for accurately guiding the telescope without holding the optical tube itself, while additional bracing adds stability to the base.

The complete telescope weighs approximately 24.9kg, but separates into a 13.2kg optical tube and 11.6kg base. Ergonomic carrying handles make the individual components easier to move.

Celestron applies XLT reflective coatings to both mirrors to improve light throughput and contrast, while low-expansion optical glass helps maintain optical performance as temperatures change.

The supplied 2" Crayford focuser provides smooth, precise focusing and accepts both 2" and 1.25" eyepieces, giving you considerable scope to expand your eyepiece collection as your interests develop.

FAQ's

How practical is the 10" StarSense Dobsonian to move?
It is a substantial telescope, but the optical tube and base separate for carrying. The tube weighs approximately 13.2kg and the base approximately 11.6kg, so most owners move the two components individually.

Does the telescope itself need batteries or an external power supply?
No. The Dobsonian mount is completely manual. Your smartphone powers the StarSense app, so there are no mount motors, telescope batteries or external power cables to manage.

Can I use 2" eyepieces with the StarSense Explorer 10"?
Yes. Its 2" Crayford focuser accepts 2" eyepieces and also supports standard 1.25" eyepieces using the supplied adapter. This gives you plenty of scope to expand your eyepiece collection later.

Smartphone Compatibility

The StarSense Explorer app is available for supported iPhone and Android smartphones. Because phone and operating-system requirements change over time, we recommend checking your phone with Celestron's current StarSense Explorer compatibility information before purchase.

Awards & Press

StarSense Explorer Dobsonian Quick Setup Guide

StarSense Explorer Dobsonian Instruction Manual

StarSense Explorer App Manual