Explore Scientific 127 mm f/7.5 Air-Spaced Triplet Apochromat Refractor Telescope OTA (ES-ED127075-04)

The Explore Scientific 127 mm f/7.5 Air-Spaced Triplet APO is a high-performance refractor engineered for serious visual observers and astrophotographers who demand exceptional color correction and optical clarity. Its premium triplet lens system uses ED glass to virtually eliminate chromatic aberration, delivering razor-sharp, high-contrast images of planets, the Moon, nebulae, and galaxies.

With its generous 127 mm aperture and 952 mm focal length, this refractor achieves an ideal blend of deep-sky performance and planetary detail. The OTA includes a robust 2.5″ hexagonal focuser for precise focusing under heavy imaging loads, plus an illuminated finder, a 2″ dielectric diagonal, and tube rings with a Vixen-style dovetail for easy mounting.

This model is a top choice for intermediate and advanced imagers seeking long-term optical reliability and superb astrophotography results.

Key Features

• 127 mm air-spaced triplet objective using ED glass for premium color correction

• 952 mm focal length (f/7.5) ideal for high-resolution imaging and visual contrast

• 2.5″ hexagonal rack-and-pinion focuser offers excellent stability for heavy cameras

• 2″ dielectric diagonal included for maximum light throughput

• Dual mounting rings + Vixen-style dovetail for broad mount compatibility

• Retractable dew shield improves portability and reduces stray light

• Includes finder scope and accessories for a full ready-to-use OTA package

Specifications