The William Optics 99% Dielectric Dura Bright Diagonal - 2" is a premium star diagonal designed to enhance visual observing with refractor and catadioptric telescopes. Its larger 2" format allows for use with wide-field eyepieces, while its high-quality construction and advanced coatings ensure maximum light transmission and image quality.
Designed for use with 2" eyepieces and telescopes with 2" focusers. May require additional adapters for use with 1.25" equipment.
Optical Performance
Features a 99% reflectivity dielectric coating on the mirror, ensuring maximum light transmission for brighter, higher-contrast views. This coating also provides excellent durability and resistance to degradation over time, maintaining optical quality for years of use.
Construction
Built with high-quality materials for durability and stability. The robust housing ensures precise alignment of the optical components, critical for delivering sharp, distortion-free images. The carbon fiber faceplate adds both aesthetic appeal and structural integrity.
Compatibility:
Designed for use with 2" eyepieces and telescopes with 2" focusers. The diagonal features standard 2" fittings on both the eyepiece and telescope sides, ensuring wide compatibility with most refractors and catadioptric telescopes. It can also accommodate 1.25" eyepieces with an optional adapter.
Comfort and Ergonomics
The 90-degree design provides a comfortable viewing position, especially for astronomical observations near the zenith. This ergonomic design reduces neck strain during extended observing sessions, making it ideal for long nights of stargazing.
Image Orientation
As a 90-degree star diagonal, it provides a correct left-right image orientation but inverts the image top-to-bottom. This configuration is ideal for astronomical observations where image orientation is less critical.
Versatility
Suitable for a wide range of astronomical observations, from planetary and lunar viewing to deep-sky objects. The 2" format allows for use of large, wide-field eyepieces, ideal for observing expansive nebulae and star fields.
Dura Bright Coating
The Dura Bright coating not only enhances reflectivity but also provides excellent protection against scratches and environmental factors. This ensures the diagonal maintains its optical performance over years of use, even in challenging observing conditions.
Precision Machining
Features precision-machined components to ensure a secure and precise fit with both eyepieces and telescope focusers. This attention to detail minimizes any potential for image shift or wobble during use, critical for high-magnification observations.
