Baader Sulphur-II (SII) Narrowband 8nm CCD Filter (2")

Baader Sulphur-II (SII) Narrowband 8nm CCD Filter (2")

Due to high demand and global product shortages due to the pandemic, please call for availability.

The Baader premium-grade 2" SII filter (8nm bandwidth) is perfect for full-frame CCD cameras. It works well in fast optical systems from f/10 to f/2.8.

These filters block the IR wavelengths. They will not produce halos or reflections.

The glass substrate is finely optically polished plane parallel, providing 1/4 wavefront over entire surface.

Multi-layer dielectric coatings are plasma-assisted and ion beam-hardened using the latest technology

The Baader Planetarium Narrowband 8nm SII Filter coatings will never degrade from normal use or normal cleaning.


  • 8nm FWHM bandpass
  • Passes 672.4 nm
  • 48mm filter threaded
  • Dielectrically coated
  • 1/4 wavefront surface accuracy
  • Made in Germany