Product Description

0.9x Reducer/Corrector for Evolux 62mm

0.9x thread-on reducer/corrector produces a flat field across the entire image while shortening exposure time by 24%. Optimized for Evolux 62mm refractors.

62mm, f/5.8, 360mm focal length
55mm back focus
30mm illuminated field
Includes one ED element
M56x1 female / M48 male threads
Includes rotator/adapter with built-in cavity for 2-inch filters

0.85x Reducer/Flattener for EvoStar 72ED

Compatible with both APS-C and full frame sensors, APS-C (crop sensors) and smaller recommended
55mm back focus
Drops f/ratio from native f/5.8 (420mm) to f/4.93 (355mm)
Reduces exposure time by 38% compared to native f/5.8
5.8 x 3.87-degree field of view when used with a full frame camera
3.79 x 2.53-degree field of view when used with APS-C crop sensor
Includes thread-on adapter to mount reducer to Evostar 72ED focuser

0.9x Reducer/Corrector for Evolux 82mm

0.9x thread-on reducer/corrector produces a flat field across the entire image while shortening exposure time by 24%. Optimized for Evolux 82mm refractors.

82mm, f/5.8, 477mm focal length
55mm back focus
36mm illuminated field
Includes one ED element
M56x1 female / M48 male threads
Includes rotator/adapter with built-in cavity for 2-inch filters

Pros & Cons

Pros

Reduces exposure time by 24% to speed up astrophotography sessions
Delivers a flat field across the entire image for consistent, sharp results
Includes an ED element to reduce chromatic aberration for superior image quality
Simple screw-on M56x1 female thread mounting for quick, tool-free installation

Cons

Only compatible with specific telescope models: Evolux 62ED, Evolux 82ED, and EvoStar 72ED
No listed brand name, so limited manufacturer warranty and support information
Only available in the 0.9x magnification model, with no alternate magnification options
No included mounting hardware or tools for installation

Common Questions

What telescopes is this corrector reducer compatible with?

It is optimized for Evolux 62mm refractors, and also fits Evolux 82ED and EvoStar 72ED telescopes.

What is the primary function of this corrector reducer?

It produces a flat field across the entire image and shortens exposure time by 24% for astrophotography.

What key optical component does this reducer include?

It includes one ED element to minimize chromatic aberration for sharp, high-quality astrophotos.

What is the back focus distance of this reducer?

This reducer has a specified 55mm back focus for proper alignment with compatible telescopes.

What mounting thread does this reducer use for attachment?

It uses an M56x1 female thread for easy screw-on attachment to compatible telescope lenses.

Sky-Watcher Corrector Reducer, 0.9x, Evolux 62ED 82ED and 0.85x EvoStar 72ED

Specifications