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

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

Features:

• Optical Formula: Apochromatic Refractor
• Useful Diameter: 120 mm
• Focal Length: 900 mm
• Focal Ratio: f/7.5
• Objective: Doublet with ED FPL-53 (Schott) glass treated with multi-coatings
• Eyepiece Holder: Crayford 50.8 mm dual-speed (10:1) in aluminum
• Material: Aluminum tube with blackened interior and baffled to limit parasitic light
• Weight (with rings and dovetail): 5.2 kg
• Tubular Dimensions (length x width): 920 mm x 140 mm

Advantages:

• High-Quality Optics: ED FPL-53 glass reduces chromatic aberrations, offering clear and contrasted images.
• Multicoatings Treatments: "Metallic High-Transmission" (MHC) for a light transmission close to 99.5%, ensuring bright and detailed views.
• Accurate Focusing: Crayford eyepiece holder with dual speed for fine adjustments, ideal for astrophotography.
• Solid and Elegant Construction: Robust aluminum tube without plastic parts, with a sleek black and white design.
• High Brightness: A 120 mm opening collects 2.25x more light than an 80 mm telescope, offering brighter and more detailed images.

Use:

• Planetary and Lunar Observation: Optimal performance for observing the details of the Moon, Sun (with appropriate filter), and 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 objective is tested to ensure optimal optical quality. White and black lines must appear rectilinear and parallel.
• StarTest: Checks the ability of optics to reproduce a point source image, ensuring perfect centering of the objective.

Accessories Included:

• Vixen-style Dovetail Rings
• Kodak Thread for Camera Adaptation

Notes:

• Maintenance: Avoid sudden temperature changes to prevent dew on the lenses. Never look directly at the Sun without an appropriate solar filter.

The Sky-Watcher Black Diamond 120ED telescope is a top choice for amateur astronomers wanting to explore the sky with exceptional precision and clarity. Enjoy high-quality optics and robust construction for unforgettable astronomical observations and photography.