Field Flattener for EvoGuide 50

Name: Field Flattener for EvoGuide 50
Brand: Sky-Watcher USA
SKU: S20214
Price: 69 USD
Availability: InStock
Rating: 4.8 (5 reviews)

Field Flattener for EvoGuide 50 - Main image

$69 ~~$115~~ In stock

Category: Astrophotography Accessories

Corrects for field curvature, allowing the Evoguide 50ED and 50DX to be used for astrophotography
Thread on metal caps
T-thread connection or 1.25" opening for camera mounting
28mm imaging circle
17.5mm back focus
5.33 x 3.57-degree field of view when used with APS-C crop sensor

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Customer Reviews (4.8 / 5 · 5 reviews)

Steven T. ★★★★★ Oct 21, 2026

The 28mm imaging circle is a nice upgrade, making sure my camera captures a flat field across the whole frame with no distorted stars at the edges. Threading on the metal cap felt solid and precise, which was a relief after struggling with cheaper plastic spacers. It solved the curvature issues I wa

David U. ★★★★★ Oct 20, 2026

Swapping in the 1.25" opening was a breeze, and I’m getting really crisp stars across the full 28mm imaging circle now—no more soft edges in my shots.

John F. ★★★★★ Oct 19, 2026

I’ve been testing this field flattener on my Evoguide 50ED, and the 28mm imaging circle makes framing targets a breeze. Stars are crisp right to the edges, and the T-thread connection felt solid when I mounted my camera.