Explore Scientific ED APO 127 mm f/7.5 FCD-100 CF HEX is a high-performance triplet apochromatic refractor designed for advanced visual observation and astrophotography. The optical system features three air-spaced elements with a central HOYA FCD-100 ED glass lens, delivering excellent chromatic aberration correction and high image contrast. The carbon fiber tube significantly reduces weight while maintaining excellent structural rigidity.

Key features

• triplet apochromatic refractor with air-spaced elements
• 127 mm aperture and 952 mm focal length (f/7.5)
• HOYA FCD-100 glass providing excellent color correction and contrast
• lightweight and rigid carbon fiber optical tube
• precision 2.5" HEXAFOC DeLuxe focuser with 10:1 micro-reduction
• large 65 mm focuser aperture reducing vignetting with large sensors
• retractable dew shield for easier transport
• carrying handle with accessory mounting capability
• 44 mm dovetail compatible with Vixen-type mounts (GP, EQ5, EXOS-II)
• hybrid finder base compatible with various finder standards

Box contents

• optical tube assembly (OTA)
• 2" diagonal mirror (99% reflectivity)
• 2 × focuser extension tubes
• tube rings with dovetail and carrying handle
• dust caps (objective and focuser)
• hybrid finder base

Technical specifications

• manufacturer: Explore Scientific
• model: ED APO 127 FCD-100 CF HEX
• SKU: 0112135
• EAN: 4007922036328
• optical design: triplet apochromatic refractor
• aperture: 127 mm
• focal length: 952 mm
• focal ratio: f/7.5
• tube material: carbon fiber
• tube diameter: 145 mm
• tube length: 790 mm
• tube weight: 5.2 kg
• focuser: 2.5" HEXAFOC DeLuxe (10:1)
• focuser size: 50.8 mm (2")
• maximum recommended magnification: 250×
• backfocus: 150 mm from focuser end
• coatings: enhanced multilayer deposition (EMD)