Explore Scientific Generation II 12-inch Truss Tube Dobsonian Telescope
The Explore Scientific Generation II 12-inch Truss Tube Dobsonian is designed for serious visual observers who want big-aperture performance in a portable, easy-to-use package. With a large parabolic primary mirror, improved mechanical features, and a collapsible truss tube design, this telescope delivers deep-sky capability without the bulk and storage demands of a solid-tube instrument.
Whether you're navigating the star clouds of the Milky Way or chasing distant galaxies, this scope offers the optical punch and flexibility that experienced stargazers demand.
12 Inches of Deep-Sky Power
The 305mm (12") primary mirror is precisely figured and polished from low-expansion optical glass, delivering high-contrast, sharp views of faint and extended deep-sky objects. At f/5 (1525mm focal length), this telescope provides a generous field of view—perfect for sweeping nebulae or resolving globular clusters—while also retaining enough focal length for detailed planetary and lunar observing with the right eyepieces.
The light-gathering power of this scope is substantial. Compared to an 8" reflector, it collects over 2.25x the light, giving fainter targets greater visibility and making brighter objects explode with detail.
Truss Tube Portability Meets Solid Performance
A key strength of the Generation II design is its collapsible truss tube system. This structure reduces the size of the telescope for transport and storage while maintaining optical alignment and rigidity during use. The truss poles are solid, lightweight, and connect with minimal tools, making setup at a dark sky site quick and straightforward.
The open-frame design also promotes faster cooling of the primary mirror, which helps reduce thermal distortion and gets you to sharp images faster—an especially welcome benefit on nights when observing time is limited.
Smooth Tracking and Stable Support
The base features oversized altitude bearings with adjustable friction, allowing precise control of up-and-down motion whether you're using lightweight Plössls or heavy wide-angle eyepieces. The azimuth axis glides smoothly on a Teflon-on-laminate bearing system, making the telescope easy to push and nudge when star-hopping across the sky.
The entire rocker box is built from moisture-resistant laminated wood panels, designed to withstand regular use in the field. A built-in handle aids in transport, and the base can be disassembled for storage or vehicle loading if needed.
Dual-Speed Focuser and Red Dot Finder Included
A 2" Crayford-style focuser with dual-speed control comes standard. The fine-focus knob gives you precise adjustment—particularly useful when observing fine planetary details or splitting close double stars. A 1.25" adapter is included for full compatibility with your eyepiece collection.
Instead of a traditional optical finder, the telescope includes a zero-magnification red dot finder, ideal for quick aiming and alignment. The red dot makes it easy to locate bright stars or celestial landmarks when navigating to your target.
Designed for Observers Who Travel Light—but Want to See Deep
The Explore Scientific Generation II 12" Truss Tube Dobsonian is a well-balanced telescope for amateur astronomers who want serious optical performance in a design that doesn't require a permanent observatory or a second pair of hands to move. It’s equally at home in the backyard or under pristine dark skies, and it’s ready to grow with you as your observing interests expand.
From the sweeping arms of M101 to the delicate tendrils of the Veil Nebula, this telescope opens up the deep sky with clarity, contrast, and immersive views. If you’re ready to take the next big step in aperture—without taking over your garage—this is the scope to get you there.
