Sky-Watcher 0.77x Reducer / Flattener for Esprit 150ED / 150EDX

Description

Unlock wider, sharper, and faster astrophotography with the Sky-Watcher 0.77x Reducer/Flattener for Esprit 150ED / 150EDX

The Sky-Watcher 0.77x Reducer / Flattener for the Esprit 150ED / 150EDX refractor is a premium dual-purpose optical accessory engineered for serious astro-imaging. Designed exclusively for the Esprit 150 optical system, it ensures exceptional performance by correcting field curvature while simultaneously reducing focal length for wider, brighter astrophotography.

As a focal reducer, it decreases the native f/7 focal ratio to f/5.4, providing a dramatic exposure time reduction of up to 68%. This allows astrophotographers to capture faint nebulae, galaxies, and deep-sky structures faster and more efficiently, increasing productivity under limited sky conditions.

As a field flattener, it delivers perfect edge-to-edge sharpness by eliminating distortion and curvature typically seen in refractors, ensuring pinpoint stars across the entire frame. With a 36mm fully illuminated field, it is ideal for both APS-C and Full-Frame camera sensors, making it perfect for modern DSLR and dedicated astronomy imaging systems.

Engineered with precision multi-coated optics housed in robust aluminum construction, this reducer/flattener ensures outstanding light transmission, durability, and premium performance. It includes adjustable back-focus capability (95mm native or 55mm using included spacing accessories), along with threaded compatibility for standard 2” filters.

For astrophotographers looking to enhance their Sky-Watcher Esprit 150 system, this reducer/flattener is an essential upgrade for faster, wider, and sharper astronomical imaging.