Baader Filters C-ERF energy guard filter 110mm, IR CUT, dielectrically coats (10920)
10620.92 Kč
Tax included
These discs are precision-optically polished to lambda/10 on both surfaces. They feature an advanced infrared antireflection coating (dielectric interference coating system with multiple individual layers) that prevents heat from entering the telescope's OTA. The plano-parallel D-ERF filter effectively blocks infrared (IR) heat radiation, even during extended observation sessions.