Reducer/Corrector (.85x) for Evostar 80 (S20200)

Name: Reducer/Corrector (.85x) for Evostar 80 (S20200)
Brand: Sky-Watcher USA
SKU: S20200
Price: 270.1 USD
Availability: InStock
Rating: 5.0 (5 reviews)

Reducer/Corrector (.85x) for Evostar 80 (S20200) - Main image

$270.1 ~~$370~~ In stock

Category: Astrophotography Accessories

Description

0.85x Focal Reducer/Corrector for Sky-Watcher Evostar 80 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher Evostar 80 ED APO, this superb quality accessory effectively reduces the telescope's focal length by a factor of 0.85x and provides much improved field-edge correction.

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Customer Reviews (5.0 / 5 · 5 reviews)

Claire J. ★★★★★ Oct 21, 2026

I was worried about vignetting on my APS-C camera, but this reducer flattened the field edge-to-edge and still let me capture the whole Veil Nebula in a single frame. The 0.85x reduction brought my f/7.5 scope down nicely for 90-second subs without star bloat.

Madison ★★★★★ Oct 20, 2026

Setup was straightforward and it threaded right onto my Evostar without any issues. With the reducer, my stars are noticeably sharper across the whole frame, and I'm getting nearly 30 minutes of guiding before needing a calibration.

Jacob ★★★★★ Oct 19, 2026

Was a bit skeptical about adding a reducer to my Evostar, but the correction across the field is spot-on—stars are sharp edge to edge now. Setup was simple and it threaded on without any issues.