William Optics AP 71/350 71 Apochromatic Refractor RedCat WIFD OTA

RedCat 71 with internal focuser: compact power for full-frame

The William Optics RedCat 71 WIFD combines the proven 71/350 Petzval optics with the internal WIFD focuser. You get a bright, sharp, and color-pure image for astrophotography and nature photography, with a balance that remains stable because nothing moves outside the tube.

Fast, tight, and without sagging

With f/4.9, the lens captures a lot of light: shorter exposures, less noise, and more detail. The image remains flat all the way to the corners of a full-frame sensor, without a separate flattener. The WIFD focuser tolerates heavy camera setups without shifting, and the Bahtinov mask in the lens hood allows for precise focusing.

In the box

• Optical tube RedCat 71/350 with WIFD focuser
• Integrated Bahtinov mask in the lens hood
• Arca-Swiss and Vixen-Style dovetail
• Nylon tote bag

Featured accessories

A William Optics UniGuide 32mm Guidescope (159 euros) completes the setup for long exposures. William Optics' M48 camera adapters are available for common mounts; choose the variant for your camera.

For whom yes, for whom no

For: Astrophotographers who want the RedCat 71 optics with the latest internal focuser, also as a travel and nature lens. Not for: Those who want to observe visually with eyepieces; the ZenithStar line is the logical choice for that.

Specifications

Unsure about the right tube for your camera and mount? The telescope selection aid helps you choose. Also view all Refracting telescopes and the full range of William Optics.