• Chroma Technology Quad Band Hb OIII Ha SII Filter is designed to be used with one shot color cameras and is narrowed on spectral wavelengths of B-Beta, OIII, H-Alpha and SII which are the four most common spectral lines from emission nebulae. It also helps with reducing light pollution.
• This configuration is a 2" mounted version.

The Chroma Technology Quad Band Hb/OIII/Ha/SII Filter is designed for use with one-shot color (OSC) cameras. It selectively transmits the four key emission lines commonly produced by nebulae, H-beta (Hb), OIII, H-alpha (Ha), and SII, while blocking much of the unwanted background light. This enhances nebular detail and contrast and helps mitigate the effects of light pollution during astrophotography.