William Optics 90° - 1.25″ Zenith prism for RedCat 51

The William Optics 90° 1.25″ zenith prism is designed specifically for the William Optics RedCat 51 (AP 51/250) apochromatic refractor. This high-quality focusing prism delivers a true-to-life, bright and comfortable image - ideal for both nature observation and viewing the moon and bright objects in the night sky.

Thanks to the precision-BAK-4 glass with anti-reflex coating, the prism offers excellent light transmission and high-contrast viewing without unwanted reflections. The matte black interior prevents stray light, keeping your image calm and making fine details more visible.

With this William Optics 90° prism you get an upright and horizontally correct image, making it perfect for observations where orientation is important - from birds and landscapes to the moon in realistic position.

The aluminum housing in elegant silver finish makes it not only durable, but also stylishly fitting for the RedCat series.

Key features

• Specially designed for William Optics RedCat 51
• Upright and correctly horizontal image display
• BAK-4 glass with anti-reflex coating for clear, high-contrast image
• Matte black interior against stray light
• Ring clamp for firm and secure eyepiece clamping
• Durable aluminum housing in silver color

Specifications

Capacity

Details

General