William Optics RedCat 71 mm APO 350 mm f/4,9 (SKU: T-C-71RD)

William Optics RedCat 71 mm Apochromatic Quadruplet Refractor - 350 mm f/4.9 Astrograph

The William Optics RedCat 71 mm APO 350 is a high-performance astrograph designed for professional astronomers and astrophotographers. It excels in field correction and chromatic aberration control, setting a new standard in optical precision and image quality.

This telescope features a sophisticated four-element Petzval APO-ED optical system. The low-dispersion lens is crafted from FPL-53 glass, a synthetic fluorite material renowned for its high Abbe number and chemical stability, produced by the esteemed Japanese company Ohara.

The RedCat 71's advanced optical design, incorporating patented solutions from William Optics, ensures a perfectly flat field without the need for additional equalizers, making it an exceptional choice for capturing breathtaking celestial images.

With precision-made clamps and a Vixen socket for attaching a finder or guider, the telescope is securely mounted and features a versatile Vixen/Arca-Swiss foot for easy tripod or mount attachment.

For more information, visit the manufacturer's website.

Key Features:

• Apochromatic quadruplet in the Petzval system with an air gap and a low-dispersion element made of Japanese FPL-53 glass (synthetic fluorite).
• Unique lens system ensuring excellent image quality and a flat field without the need for a flattener or focus reducer (patent by William Optics).
• Large diameter full illumination wheel allowing compatibility with cameras equipped with full-frame sensors.
• Ultra-precise, locking helical focuser.
• CNC technology-based optical tube clamps.
• Mounting foot compatible with Vixen and Arca-Swiss sockets, enabling mounting on a mount or photographic tripod.

Technical Specifications:

• Telescope optical system: APO ED quadruplet (Petzval) with an air gap.
• Lens arrangement: 2 - 1 - 1.
• Objective diameter: 71 mm.
• Focal length: 348 mm.
• Focal ratio: f/4.9.
• ED lens material: FPL-53 glass (Ohara, Japan).
• Full illumination circle diameter: 45 mm.
• Compatible sensor sizes: APS-C, full frame.
• Focuser: Helical with rotator.
• Camera mounting thread: M48x0.75.
• Finder foot: Vixen.
• Mounting for mounting: Vixen/Arca-Swiss.
• Tube length (extended): 435 mm.
• Tube weight (without accessories): 2.8 kg.
• Tube finish: Red.

Kit Components:

• William Optics RedCat 71 APO 350 refractor.
• Dew shield.
• Bahtinov mask with mount.
• Lens cap.
• Fixing clamps with Vixen/Arca-Swiss foot.
• Transport cover.

Warranty:

This product comes with a 24-month guarantee.