Sky-Watcher 0.77x Reducer / Field Flattener for Esprit 120ED & 120EDX Telescopes

Description

Turn your Sky-Watcher Esprit 120ED into a faster, wider, and sharper astro-imaging powerhouse with the precision-engineered 0.77x Reducer/Flattener

The Sky-Watcher 0.77x Reducer / Field Flattener is engineered exclusively for the Esprit 120ED and 120EDX apochromatic refractors, transforming them into high-speed astrophotography imaging systems with superior sharpness and edge-to-edge field correction.

This advanced three-element optical reducer shortens the focal length by 0.77x, increasing imaging speed to approximately f/5.4, meaning brighter exposures and shorter imaging times without compromising detail. The precision-designed field flattener eliminates distortion and curvature across the frame, delivering crisp, pinpoint stars even at the image edges.

Built to professional astrophotography standards, it provides a fully illuminated and corrected 34mm image circle, making it ideal for APS-C sensors and fully capable of supporting full-frame cameras. Fully multi-coated optics ensure maximum light transmission, contrast, and clarity, while the durable aluminum housing guarantees long-lasting reliability.

Featuring multiple thread options, this reducer offers flexible mounting solutions with standard M48 threading and a removable adapter revealing M71/M78 thread compatibility for custom imaging configurations. With a precise 55mm back-focus (standard) and extended back-focus options for custom setups, it provides exceptional versatility for DSLR and dedicated astro cameras alike.

Whether you’re imaging galaxies, nebulae, or wide-field deep-sky targets, this reducer/flattener unlocks the full optical potential of your Esprit 120ED system.