Sky-Watcher Black Diamond 120ED f/7.5 Scope - High Quality Optics

Discover the wonders of the deep sky and planets with the Sky-Watcher Black Diamond 120ED astronomical telescope. Designed to deliver exceptional optical performance, this large-diameter apochromatic refractor is ideal for astrophotography and high-precision visual observation.

Features:

• Optical formula: Apochromatic telescope
• Useful diameter: 120 mm
• Focal length: 900 mm
• Focal ratio: f/7.5
• Lens: Doublet with multi-layer treated ED FPL-53 glass (Schott)
• Focus: Crayford 50.8 mm dual speed (10:1) aluminum
• Material: Aluminum tube with blackened and baffled interior to limit stray light
• Weight (with collars and dovetail): 5.2 kg
• Tube dimensions (length x width): 920 mm x 140 mm

Advantages:

• High Quality Optics: FPL-53 ED glass reduces chromatic aberrations, providing sharp, contrasty images.
• Multi-layer Coatings: “Metallic High-Transmission” (MHC) for light transmission close to 99.5%, guaranteeing bright and detailed views.
• Focusing Accuracy: Dual-speed Crayford focuser for fine adjustments, ideal for astrophotography.
• Solid and Elegant Construction: Robust aluminum tube without plastic parts, with an aesthetic black and white design.
• High Brightness: A 120mm aperture harvests 2.25x more light than an 80mm refractor, delivering brighter, more detailed images.

Usage:

• Planetary and Lunar Observation: Optimal performance for observing the details of the Moon, the Sun (with appropriate filter) and the planets.
• Deep Sky Astrophotography: Ideal for photographing nebulae, galaxies and globular clusters thanks to its short focal ratio and high brightness.

Quality Control:

• Ronchi test: Each lens is tested to ensure optimal optical quality. The white and black lines should appear straight and parallel.
• StarTest: Checks the ability of the optics to reproduce a point image of a point source, ensuring perfect centering of the lens.

Accessories Included:

• Clamps with Vixen type dovetail
• Kodak thread screw for camera adaptation

Notes:

• Maintenance: Avoid sudden temperature changes to prevent lens fogging. Never look directly at the sun without an adequate sun filter.

The Sky-Watcher Black Diamond 120ED refractor is the instrument of choice for amateur astronomers who want to explore the sky with exceptional precision and clarity. Enjoy high-quality optics and rugged construction for unforgettable astronomical observations and photographs.