Skywatcher AP 120/900 EvoStar ED DS-Pro OTA

Description

Experience true color-free planetary observation and high-resolution solar system video imaging with the Skywatcher AP 120/900 EvoStar ED DS-Pro OTA apochromatic doublet refractor optical tube assembly. Designed with an f/7.5 focal ratio, this 120mm (4.72 in) aperture telescope features a 900mm focal length, delivering 0.97 arcseconds Dawes resolving power and reaching magnitude 13.1 for visual astronomers.

The Skywatcher AP 120/900 EvoStar ED DS-Pro OTA utilizes an air-spaced doublet objective incorporating Ohara FPL-53 extra-low dispersion optical glass and Schott components treated with Metallic High-Transmission Coatings (MHTC). Its 920mm aluminum tube features internal glare baffles, an unobstructed 0% central profile, and a 2-inch dual-speed Crayford focuser with a 1:10 micro-drive. Weighing 5.13 kg (11.31 lbs), this 120mm ED refractor mounts securely onto standard Vixen-style saddles.

Key Features of Skywatcher AP 120/900 EvoStar ED DS-Pro OTA

Built for high-aperture apochromatic planetary observation, double star splitting, and compact DSO astrophotography, this 120mm Sky-Watcher EvoStar ED DS-Pro refractor pairs FPL-53 doublet optics with a dual-speed Crayford focuser. Its 900mm focal length provides outstanding color correction and contrast.

• 120mm (4.72 in) aperture with 900mm focal length and versatile f/7.5 optical speed
• Air-spaced apochromatic doublet objective featuring Ohara FPL-53 and Schott glass
• Metallic High-Transmission Coatings (MHTC) for maximum optical throughput
• 0% secondary obstruction for clear, high-contrast unobstructed light transmission
• 2-inch dual-speed Crayford focuser with 1:10 planetary micro-gear reduction
• Rigid aluminum tube construction weighing 5.13 kg (11.31 lbs)
• Vixen-style 44mm dovetail bar with hinged tube mounting rings
• 2-inch dielectric star diagonal, 9×50 optical finderscope, 28mm eyepiece, and hard case included

Ohara FPL-53 ED Doublet Optics & Pure Color Fidelity

The combination of Ohara FPL-53 and Schott glass elements eliminates secondary chromatic aberration, delivering crisp planetary disks, lunar rilles, and tight binary stars. Featuring an unobstructed optical path, this Sky-Watcher ED refractor supports magnifications from 17.1x up to 240x.

2-Inch Dual-Speed Crayford Focuser & Aluminum Hard Case

Precise focus adjustments are crucial when inspecting planetary atmospheres and lunar topography. The Sky-Watcher EvoStar 120ED DS-Pro features a 2-inch Crayford focuser with 1:10 micro-reduction for smooth, backlash-free focusing. Packaged in a durable aluminum hard case, this optical tube assembly is well protected during transport to dark-sky observation sites.

• 2-inch dual-speed Crayford focuser with 1:10 precision micro-focus reduction
• 2-inch dielectric star diagonal delivering 99% reflectivity for high-contrast viewing
• Custom aluminum hard storage case with precision foam lining for secure transport

Sky-Watcher EvoStar ED Pro Series Warranty

The Skywatcher AP 120/900 EvoStar ED DS-Pro OTA is backed by a 2-year limited warranty against material and manufacturing defects. The complete factory package contains the 120ED optical tube assembly, mounting rings, Vixen-style dovetail bar, 2-inch dielectric star diagonal, 9×50 finderscope, 28mm LET eyepiece, and aluminum hard case.