The William Optics 45° Erecting Prism - 1.25" is a versatile optical accessory designed to provide a comfortable viewing angle and correct image orientation for both terrestrial and astronomical observations. This high-quality prism is compatible with 1.25" eyepieces and telescopes, offering enhanced versatility for various observing scenarios.
Designed for use with 1.25" eyepieces and telescopes with 1.25" focusers. Not compatible with 2" equipment without additional adapters.
Optical Performance
Features high-quality optical glass and coatings to ensure bright, clear images with minimal light loss. The erecting prism design provides a fully corrected image orientation, making it ideal for both terrestrial and celestial observations.
Construction
Built with durable materials to ensure long-lasting performance and reliability. The precision-machined housing provides secure connections and maintains proper alignment of the optical elements.
Compatibility:
Designed for use with 1.25" eyepieces and telescopes with 1.25" focusers. The prism features standard 1.25" fittings on both the eyepiece and telescope sides, ensuring wide compatibility with most refractors, reflectors, and catadioptric telescopes.
Comfort and Ergonomics
The 45-degree design provides a comfortable viewing position, especially for terrestrial observations or astronomical viewing at lower angles. This ergonomic design reduces neck strain during extended observing sessions, making it ideal for both casual viewing and prolonged study of objects.
Image Orientation
Unlike standard star diagonals, this erecting prism provides a fully corrected image orientation - right-side-up and correctly oriented left-to-right. This feature is particularly valuable for terrestrial observations and for easily locating and tracking celestial objects.
Versatility
Suitable for a wide range of observations, from daytime terrestrial viewing to nighttime astronomical observations. The correct image orientation and 45-degree angle make it especially useful for nature watching, spotting scopes, and for easily following star charts during astronomical sessions.
Optical Coatings
Features high-quality anti-reflection coatings to maximize light transmission and reduce unwanted reflections. These coatings help maintain image brightness and contrast, crucial for observing faint celestial objects and ensuring clear terrestrial views.
Ease of Use
Designed for quick and easy installation and removal. The smooth, precise fit ensures that changing between direct viewing and prism use is hassle-free, allowing for flexibility during observing sessions. The 45-degree angle is particularly convenient for seated observations or when using the telescope on a table or low mount.
