UL18g 18" Premium Ultra Light GoTo Dobsonian

OnStep GoTo Controller

State-of-the-art GoTo system designed by Howard Dutton with built-in WiFi and Bluetooth. Access 30,000+ objects via the Smart Hand Controller, Sky Safari, Stellarium, or ASCOM/INDI drivers. Features telescope encoders, real-time clock, advanced multi-star alignment, and sidereal/lunar/solar tracking rates.

Exclusive Sandwich Mirror Technology

The lightweight sandwich mirror design cools dramatically faster than solid mirrors, minimizing thermal gradients and eliminating a major source of image distortion. Unlike fan-based cooling, this passive design achieves rapid and stable thermal equilibrium naturally — without introducing vibration.

Why this matters

One of the primary limitations in large-aperture telescopes is "mirror seeing" — turbulence caused by temperature differences between the mirror and the surrounding air. In changing conditions, a thick solid mirror may never fully reach equilibrium, preventing it from achieving its full optical performance. The sandwich mirror design minimizes this effect, allowing the system to reach optimal performance quickly and consistently, delivering sharper and more stable views without the need for active cooling.

Enhanced Optical Coatings

96% enhanced reflective coatings on both primary and secondary mirrors with precision-controlled dielectric layers. Maximum light throughput for bright, contrast-rich images on deep-sky targets.

18-Point Mirror Flotation

Optimized 18-point flotation system in a real mirror box with completely independent Push-Pull collimation and sling lateral support. Eliminates potato-chip astigmatism found in simpler designs. Safe mirror protection and easy transportation.

All Metal Construction

CNC-machined 6063-T6 aluminum alloy truss tubes, structural steel mirror cell, and aluminum alloy OTA and mount structure. 8 rigid truss tubes with folding ALT bearing for extreme portability. Finished with environmentally friendly black powder coating.