Baader Filters D-ERF 75mm energy rejection filter, IR blocking, dielectric coated (15256)
1063.6 ₪
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 blocks infrared (IR) heat radiation, preventing heat from penetrating the telescope's OTA, even during extended observing sessions.