Astrophotographers interested in capturing the specific wavelength that can be found in gaseous and planetary nebulae will be glad they added this WO filter to their astrophotography setup.
Not only will this help astronomers isolate the Hα (656nm) and OIII (500nm) emission lines, but it will help reduce the interference of light pollution. With these capabilities, this filter will offer more details and greater contrast for celestial images.
The filter is coated with Ion Beam-Assisted Deposition (IBAD) technology. This makes the filter durable and easy to clean. It also protects the filter from aging effects from time, temperature, and humidity. It is black matte anodized and the frame is Teflon coated. This eliminates flare and keeps it easy to install and remove the lens.