The Baader UV/IR-Cut 2" CMOS-Optimized L-Filter is specially designed for use with 2" Filter sliders of the Baader FCCT (Filter Changer Camera Tilter) for RASA 8 and QHY cameras. It reflects harmful thermal radiation in the infrared spectral range and provides 98% transmission over the entire visible spectrum from 420 - 685 nm. Furthermore, it prevents blurred star imaging with red-sensitive digital and CCD/CMOS cameras. Additionally, it Reflex-Blocker hard coated and planeoptically polished with sealed coating edges (Life-Coat™). Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim.