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  • T-2 BBHS star diagonal withT-2 threads for compatibility with all Baader's Astro T2 system of parts
  • Provides high reflectance over a wide spectral range from 390 to 2000nm to give high color fidelity
  • Higher in brilliance and lower scatter than cheaper dielectric coatings
  • BBHS = BroadBand HardSilver coating with dielectric protective overcoating
  • Sitall glass-ceramic zero expansion mirror won't lose its flatness even during extreme temperature changes