Omegon Amici Prism 45° 1.25″ Erecting Prism
When using an astronomical telescope for terrestrial viewing, you quickly run into a familiar problem - the image appears flipped, inverted, or mirror-reversed. The Omegon Amici Prism 45° solves this elegantly: thanks to its special optical design, it delivers an upright and correctly oriented image, exactly as you would see the scene with the naked eye.
What Is the Amici Prism Used For?
The primary application of this prism is terrestrial observation - watching landscapes, wildlife, birds or any subject at or near the horizon. The 45° viewing angle provides a comfortable posture that puts no strain on the neck or back, while being less steep than a standard 90° zenith diagonal.
The prism is compatible with the following telescope types:
- Refractors (lens-based telescopes)
- Schmidt-Cassegrain telescopes (SCT)
- Maksutov-Cassegrain telescopes
- Other telescopes with a rear-facing focuser
Due to its optical path length, the prism is not suitable for Newtonian reflectors, where it would not be possible to achieve focus.
Solid Mechanical Construction
The prism body is made of metal, ensuring long-term durability and a secure hold for accessories. Metal connectors on both ends eliminate play and provide a firm, wobble-free connection to both the telescope and the eyepiece.
Why Choose an Amici Prism Instead of a Standard Diagonal?
A standard 90° zenith diagonal gives a comfortable viewing angle, but the image is always mirror-reversed - acceptable for astronomical use, but distracting when observing terrestrial subjects. The Amici prism uses a special roof-shaped optical surface to correct this, producing a natural image that is correct in every axis.
Technical Specifications
- Type: Amici erecting prism
- Angle: 45°
- Telescope connection: 1.25″ barrel (male)
- Eyepiece connection: 1.25″ sleeve (female)
- Connector material: metal
- Image: upright and correctly oriented
- Compatible with: refractors, SCT, Maksutov-Cassegrain
The Omegon Amici Prism 45° is a practical accessory for anyone who wants to use their telescope not only for nighttime astronomy, but also for comfortable daytime observation of nature or distant scenery.
