1.25'' CLS Light Pollution BroadbandFilters

CLS F9155A Filter - Light Pollution Reduction

The CLS F9155A filter is designed to reduce light pollution and improve the contrast of images taken in urban environments. It uses an electron beam evaporation technology with ion-assisted deposition for exceptional durability and scratch resistance.

Features

• 90% transmission of main nebula emission lines (Ha 656nm, OIII 496nm, 500nm, SII672nm and H-beta 486nm)
• 0.1% transmission of off-band wavelengths, including the main emission lines of artificial light pollution (Na 589nm, Hg 435nm and 578nm)
• Designed for unmodified color CCD cameras and DSLRs
• Effective in suppressing harmful light in urban environments and improving the contrast of photographed targets