Telescope Accessories， Telescope 1.25'' 90 Degree Mirror Diagonal 99% Reflectivity Coatings,for Zenith Mirror

=========High-concerned chemical : NoneReflectivity : 99%Thread : 28.5*0.6Net Weight : 125g / 4.41ozOptical path length : 54mm

• Astrophotography & Imaging Essentials Capture the cosmos with T-ring adapters, prime focus adapters, field flatteners, reducers, smartphone adapters, and dedicated astronomy cameras.
• This 1.25'' 90-degree mirror diagonal is designed for astronomical telescopes, delivering a comfortable viewing angle for long-time observation.
• With coatings, it achieves up to 99% reflectivity, ensuring bright, clear and imaging.
• Precision optical structure minimizes light loss, providing sharp and stable views for both celestial and terrestrial observation.
• Standard 1.25-inch interface ensures wide compatibility with most eyepieces and telescope focusers.
• Compact, sturdy and easy to install, it is an ideal accessory for astronomy enthusiasts.