TheAntlia LRGBseries filters are specially designed for deep space photography with monochrome cameras. The strict manufacturing process and the quality control guarantees atight toleranceof the filter thickness (± 0.05mm) which makes these filtersparfocal. This allows the filter change without the need to refocus.
Each filter isfully multi-coatedto minimise internal reflections, halos around stars and to assure a high transmission which is above95%. To even further enhance the contrast, reduce the glare and internal reflections, Antlia appliesedge-blackeningcoating on each filter.
Each filter cuts off the ultraviolet and infrared light so there is no need to use the L filter in combination with the colour filters.