Skywatcher AC 90/900 EvoStar EQ-3-2 Telescope

Description

Planetary observers seeking maximum platform stability and double star measurement precision rely on the Skywatcher AC 90/900 EvoStar EQ-3-2 Telescope heavy-duty German equatorial refractor system. Designed with an f/10.0 focal ratio, this 90mm (3.54 in) aperture telescope features a 900mm focal length, delivering 1.29 arcseconds Dawes resolving power and reaching magnitude 12.5 for high-contrast lunar and planetary observation.

The Skywatcher AC 90/900 EvoStar EQ-3-2 Telescope utilizes an air-spaced Fraunhofer achromatic doublet objective with multi-coated anti-reflection crown and flint glass elements. Its 910mm aluminum tube features internal glare baffles, an unobstructed 0% central profile, and a 1.25-inch rack-and-pinion focuser with integrated T-2 camera threads. Mounted on an EQ3-2 heavy-duty German equatorial mount and aluminum tripod, the 2.48 kg OTA ensures vibration-free manual celestial tracking.

Key Features of Skywatcher AC 90/900 EvoStar EQ-3-2 Telescope

Built for high-stability lunar observation, planetary surface analysis, and double star splitting, this 90mm Sky-Watcher EvoStar refractor telescope pairs Fraunhofer doublet optics with an EQ3-2 equatorial mount. Its dual slow-motion tracking controls and 6×30 finderscope provide rock-solid visual performance.

• 90mm (3.54 in) clear aperture with 900mm focal length and balanced f/10.0 focal ratio
• Air-spaced Fraunhofer achromatic doublet objective using CDGM optical glass
• Multi-coated anti-reflection optical layers with 0% central obstruction
• 1.25-inch rack-and-pinion focuser with integrated external T-2 camera thread
• EQ3-2 heavy-duty manual German equatorial mount with dual-axis slow-motion controls
• Adjustable aluminum tripod with integrated central accessory storage tray
• 6×30 optical finderscope, 1.25-inch 90-degree diagonal, and eyepieces included
• Counterweights and Vixen-style 44mm dovetail mounting bar with tube rings included

Fraunhofer Doublet Optics & 1.29 Arcsecond Resolving Power

The 90mm multi-coated Fraunhofer objective controls chromatic aberration across an extended 900mm focal length, resolving fine lunar rilles, planetary disks, and close binary stars. Featuring an unobstructed optical profile, this Sky-Watcher refractor supports magnifications from 12.9x up to 180x.

EQ3-2 German Equatorial Mount & Dual Slow-Motion Controls

Tracking celestial objects at high magnification requires steady, vibration-damped mechanics. The Sky-Watcher AC 90/900 includes an EQ3-2 equatorial mount with dual slow-motion cables, allowing observers to track objects along right ascension and declination smoothly. Supported by a rigid aluminum tripod, it provides a stable viewing platform for planetary observation.

• EQ3-2 heavy-duty manual German equatorial mount with dual slow-motion control cables
• 1.25-inch 90-degree star diagonal paired with Super 25mm and 10mm visual eyepieces
• High-aperture 6×30 optical finderscope paired with a 44mm Vixen-style mounting plate

Sky-Watcher EvoStar Black Diamond Warranty

The Skywatcher AC 90/900 EvoStar EQ-3-2 Telescope is backed by a 2-year limited warranty against material and manufacturing defects. The complete factory package contains the 90mm refractor OTA, EQ3-2 mount head, aluminum tripod with tray, counterweights, 6×30 finderscope, 1.25-inch 90-degree diagonal, tube rings, and two eyepieces.