Code: 2458431 Sulfur-II (8 nm) line filter (50.8mm) with anti-reflection coatings
2-inch Sulfur-II CCD Line-Filter (8nm)
Plane-optically polished with an accurate 1-4th wavefront error over the entire surface. Includes anti-reflection coatings designed to prevent halos and image artifacts. The ultra-hard ion beam deposition ensures the coatings will never degrade from use or normal cleaning.