Accessory · 2010– · MSRP $150
Astro-Tech 2" Dielectric Mirror Diagonal (Refractor)
Key specifications
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About
2" 99% reflectivity dielectric star diagonal for refractors, with 46-layer ion-deposited dielectric coatings on a 1/10-wave 10 mm BK7 substrate, brass compression-ring eyepiece holder, and a supplied 1.25" adapter. Higher reflectivity than aluminum (88%) or silver (96-97%).
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