The Explore Scientific 10" Generation II Truss-Tube Dobsonian Telescope blends serious light-gathering power with user-friendly design—delivering breathtaking views of deep-sky objects, planets, and the Moon in a system that remains portable, easy to use, and tool-free to assemble.
This next-gen model builds on the legacy of John Dobson’s revolutionary concept: combining large Newtonian optics with a simple alt-azimuth mount. The result? A high-performance observing platform that offers some of the best aperture-per-dollar value in the astronomy world.
Equipped with a 254mm (10") parabolic primary mirror, this Dobsonian gathers over 1,500× more light than the naked eye—unveiling nebulae, galaxies, star clusters, and planetary features in stunning detail. The tool-free truss design breaks down effortlessly for transport and is rigid enough for high-power viewing from your backyard or favorite dark sky site.
From oversized altitude bearings to a collimation system designed for solo use, every detail is built for effortless setup and smooth operation—making this telescope an excellent choice for intermediate observers and ambitious beginners alike.
CA Residents: Prop 65 WARNING(S)
⭐ Features & Benefits
- 254mm (10") parabolic primary mirror for crisp views of deep sky and planetary objects
- Gathers 1,500× more light than the unaided eye—ideal for serious visual observing
- Two-speed 2" rack-and-pinion focuser with 1.25" adapter for smooth, precise focusing
- Tool-free truss tube design for quick disassembly and easy transport
- Oversized 16.5" altitude and 13" azimuth bearings for ultra-smooth motion
- Dual cooling fans on the primary mirror speed up thermal equalization
- Collimation assist tool and single-person alignment system for precision tuning
- Lightweight, flexible light baffle improves contrast by blocking stray light
- Intuitive red dot finder helps you quickly center celestial objects
🌟 Who It’s For
- Intermediate observers seeking a serious aperture boost
- Beginners ready to invest in a high-performance telescope they can grow into
- Deep-sky fans targeting galaxies, clusters, and nebulae with fine detail
- Lunar and planetary observers looking for sharp, high-contrast views
- Astronomy educators or outreach presenters who need a portable but powerful scope
🎯 What You’ll Be Able to See
- Spiral arms in bright galaxies like M51 and M33
- Nebulae such as the Orion and Lagoon glowing in high contrast
- Star clusters like M13 and M22 resolved into brilliant points
- Saturn’s rings, Jupiter’s moons and bands, and lunar craters in stunning clarity
- Subtle planetary features on Mars during opposition
🎒 What’s Included
- 254mm (10") parabolic primary mirror optical tube
- Two-speed 2" rack-and-pinion focuser with 1.25" adapter
- LED red dot finder
- Collimation assist tool
- Soft light baffle for improved contrast
- Dual primary mirror cooling fans (AA battery pack not included)
- Tool-free truss connectors for quick setup and takedown
Specs
| Item Number | DOB1045–00 |
|---|---|
| Focal Ratio | f/5 |
| Focal Length | 1270 mm |
| Primary Mirror Diameter | 254 mm |
| Secondary Obstruction | 24% |
| Mirror Cell Support Points | 9 |
| Truss Pole Length | 64 cm |
| Truss Pole Diameter | 20 mm |
| Secondary Cage Assembly Diameter | 33 cm |
| Secondary Cage Assembly Weight | 6.5 lbs |
| Secondary Cage Assembly Height | 17 cm |
| Mirror Box / Rocker Box Height | 42 cm |
| Mirror Box Weight* | 35 lbs |
| Eyepiece Height at Zenith | 119 cm |
| Theoretical Rayleigh Limit | 0.54 arcseconds |
| Theoretical Limiting Magnitude | 14.7 mag |
| Theoretical Maximum Magnification | 500x |
- Mirror weight may vary slightly due to the manufacturing process.
Warranty Information:
This product includes a Limited One-Year USA Warranty, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when registered within 60 days of purchase.
To activate your warranty, register your product at:
www.explorescientific.com/pages/product-registration