William Optics AP 71/350 71 Apochromatic Refractor RedCat OTA

The classic RedCat 71: bright and color-pure from the first shot

The William Optics RedCat 71 It provides a clear, flat, and color-accurate image from the very first shot. With a 71mm aperture and 350mm focal length, you can photograph larger nebulae and star fields with true image scale, and at f/4.9, exposures remain short. Mount your camera, focus smoothly, and begin: during the day for nature, after sunset under the stars.

Petzval image without loose accessories

The Petzval design keeps the image flat all the way to the corners of a full-frame sensor, without a separate flattener. The Bahtinov mask in the lens cap allows for precise focusing, and the Vixen/Arca-Swiss dovetail fits directly onto mounts and tripod heads.

In the box

• Optical Tube RedCat 71/350
• Integrated Bahtinov mask in the lens cap
• Vixen and Arca-Swiss 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

Suitable for: Astrophotographers who prefer the classic RedCat 71 model with an external focuser. Not suitable for: Those who want the latest internal focuser; in that case, consider the RedCat 71 WIFD, which combines the same optics with the WIFD system.

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.