Explore Scientific ED APO 127mm f/7.5 FCD-100 CF HEX Refractor

Explore Scientific ED APO 127mm f/7.5 FCD-100 CF HEX Refractor

Description

The Explore Scientific ED APO 127mm f/7.5 FCD-100 CF HEX is a premium refractor tailored to meet the demands of experienced astronomers and astrophotographers. Its air-spaced triplet lens system, featuring high-quality HOYA FCD-100 ED glass, delivers exceptional chromatic correction and contrast. With a polystrehl value of 0.97, this telescope achieves a level of optical excellence rarely found in this price category.

Its 127 mm aperture and 952 mm focal length (f/7.5) offer a well-balanced system for planetary observation, lunar detail, and deep-sky imaging. The high light-gathering capacity is paired with a flat field and minimal vignette, even when used with large sensor cameras, thanks to the 65 mm clear aperture of the 2.5" HEXAFOC focuser.

The carbon fiber tube reduces weight and enhances thermal stability, making this telescope suitable for portable setups and medium-class mounts. The HEXAFOC rack-and-pinion focuser, with 10:1 microfocusing capability, allows precise control for visual and imaging applications, even with heavy accessories such as filter wheels or full-frame cameras.

Included in the package are a 2" dielectric diagonal with 99% reflectivity, two extension tubes for focus travel, CNC-machined tube rings with a carrying handle that doubles as a camera mount, a Vixen-style 44 mm dovetail plate with stainless steel reinforcement, a retractable dew shield, and a hybrid finder shoe compatible with multiple finder standards.

This instrument is part of Explore Scientific’s “Professional Line”, positioned between the “Essential Line” (FCD-1 glass) and “High-End Line” (FPL-53 glass with FeatherTouch focuser).

Technical specifications

• Air-spaced triplet apochromatic refractor

• Aperture: 127 mm

• Focal length: 952 mm

• Focal ratio: f/7.5

• ED glass: HOYA FCD-100

• Polystrehl: 0.97

• Tube length: 790 mm

• Tube weight (without accessories): 5.2 kg

• Total weight (with accessories): 7.7 kg

• 2.5" HEXAFOC dual-speed focuser (10:1)

• Clear aperture of focuser: 65 mm

• Focus position: 150 mm from drawtube

• Optical coating: Enhanced Multilayer Deposition (EMD)

• Tube material: Carbon fiber

• Retractable dew shield

• Accessory thread: M68x1 mm

Additional information

• Includes 2" diagonal (99% dielectric mirror)

• Two focuser extension tubes included

• CNC-machined tube rings with carrying handle

• Vixen-style dovetail plate with steel reinforcement

• Hybrid finder base compatible with various mounts

• Compatible with EQ5, LXD75, EXOS-II, and Great Polaris

• Suitable for planetary, lunar, and deep-sky observation and astrophotography

• Extended warranty: 10 years (with product registration)