The Celestron S81601, also known as the Celestron Libra SCTW-70, is a entry-level 70mm refractor telescope designed as part of the Xiaomi Youpin ecosystem. It is marketed as a dual-purpose (astronomical and terrestrial) professional-style telescope for beginners and hobbyists.
Key Specifications
Optical Design: Achromatic Refractor.
Aperture: 70mm (2.75 inches), which provides basic light-gathering power for viewing the Moon and brighter planets.
Focal Length: 500mm.
Focal Ratio: f/7.1 (approximate, based on 70/500 dimensions).
Mount Type: Manual Alt-Azimuth (AZ) theodolite, allowing simple up-down and left-right movement.
Optics: Fully Multi-Coated (FMC) anti-reflection film to improve light transmission and image clarity.
Included Accessories
Eyepieces: Typically includes three eyepieces: 20mm (25x), 10mm (50x), and an aspherical 4mm (125x).
Barlow Lens: 2x magnifier to double the magnification of any used eyepiece.
Finderscope: 6×24 improved optical star finder for locating targets.
Zenith Mirror: 90-degree positive image mirror for comfortable viewing.
Smartphone Adapter: A mobile phone holder for photography and real-time sharing.
Tripod: Durable stainless steel tripod.
Observation Capabilities
Lunar & Planetary: Offers clear views of the Moon’s craters and can show bright planets like Jupiter and Saturn.
Terrestrial: The included erect image diagonal makes it suitable for daytime viewing of landscapes and wildlife.
Limitations: With a 70mm aperture, it has limited resolving power for faint deep-sky objects (galaxies and nebulae), which may appear as faint smudges.
Purchasing Options
Retailers like noon.com list this model (often designated as S881601) for approximately 1200 AED. Other versions from sellers on eBay range between 983 AED and 1046 AED.
Would you like to compare this to other beginner models like the Celestron Travel Scope 70 or the AstroMaster series?
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