Sky-Watcher 0.77× Reducer / Corrector for Esprit 150 ED and EDX

Sky-Watcher 0.77× Reducer / Corrector for Esprit 150 ED and EDX

Designed specifically for Sky-Watcher Esprit 150 ED and EDX apochromatic spotting scopes, this focal reducer / field corrector 0.77× is a top-of-the-range accessory for demanding astrophotographers who want to optimize field of view, optical speed and star quality right up to the edges of the sensor.

Thanks to its three fully multi-treated lenses, The Esprit 150 ED is a high-performance photographic instrument, thanks to its precise correction of field curvature while reducing focal length.

Immediate gains in speed and field

With a reduction factor of 0,77×, this corrector lowers the telescope's focal ratio Esprit 150 ED at f/5.4, enabling :

• From significantly reduced installation times
• A broader scope, ideal for extended nebulae and large objects
• Excellent control of star shape over the entire corrected field

The corrected image circle of 36 mm guarantees even illumination and full optical correction up to format APS-C, while remaining full-format compatible with top-level results.

Optimum compatibility and mechanical integration

The corrector comes with a M48 adapter offering a standard 55 mm backfocus, perfectly compatible with Sky-Watcher reflex rings:

• Canon EOS M48
• Nikon M48

After removing the adapter, a internal thread M71x1 becomes accessible, allowing customized configurations with a maximum backfocus of 75 mm, ideal for advanced setups
(cooled cameras, filter wheels, optical drawers).

The corrector also accepts 2-inch filters, This makes it easy to integrate into a modern imaging chain without any mechanical compromises.

Technical specifications

In a nutshell

The Sky-Watcher 0.77× reducer/corrector for Esprit 150 ED is the essential accessory for fully exploiting the photographic potential of this iconic telescope:

• Perfectly corrected field
• Net gain in optical speed
• Extended compatibility with modern photo configurations
• Clean, rigid mechanical integration

An obvious choice for astrophotographers seeking performance, reliability and optical coherence with Spirit 150 ED.