Chroma Filters SII 5nm 2" (66095)

The narrowband SII 5nm filter is designed for astrophotography, allowing light at a wavelength of 672nm to pass through while blocking all other wavelengths. With its 5nm bandpass, this filter enhances contrast and detail, making it ideal for imaging emission nebulae, planetary nebulae, and supernova remnants. It is a key component for achieving the "Hubble Space Telescope" look, as seen in iconic images like the "Pillars of Creation" in the Eagle Nebula (Messier 16).

When combined with H-alpha and OIII filters, the SII filter enables tri-color narrowband imaging. This method allows astrophotographers to capture breathtaking deep-sky images even under moonlit skies, ensuring consistent productivity regardless of light pollution.

Specifications:

Capacity:

• Connection (to the Telescope): 2"

• Frame: 2"

• Mount Material: Aluminum

• Central Wavelength (nm): 672

• Half-Value Width (nm): 5

General:

• Type: Filters

• Type of Build: Line Filter

Area of Application:

• Planetary Nebulae: Yes

• Supernova Remains: Yes

• Useful for Photographs: Yes

• Anti Light-Pollution: Yes