Hellma 666-S000 Glass Filter Set

Included:

+ F1 Holmium Glass Filter

+ F2 Neutral Density Glass Filter (0.25 Abs)

+ F3 Neutral Density Glass Filter (0.5 Abs)

+ F4 Neutral Density Glass Filter (1.0 Abs)

+ F0 Reference Filter Frame

Wavelength:

666-F1: 279.3 nm, 360.8 nm, 453.4 nm, 536.4 nm, 637.5 nm

666-F2 440 nm, 465 nm, 546.1 nm, 590 nm, 635 nm

666-F3 440 nm, 465 nm, 546.1 nm, 590 nm, 635 nm

666-F4 440 nm, 465 nm, 546.1 nm, 590 nm, 635 nm