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SBIG 36 mm Round Optical Filters (LRGB Package)

SBIG 36 mm round optical filters are compatible with FW8-8300 and FW8S-Aluma filter wheels.  They also work with older STT and self-guided Aluma wheels.  These filters are built for SBIG to our exacting specifications.  All filters are parfocal, which avoids unnecessary refocusing. They are 2mm thick.



Filters and filter sets available include:


  • Luminance (L)
  • Red (R)
  • Green (G)
  • Blue (B)
  • Clear (C)
  • Hydrogen Alpha (Ha) – 656.3 nm, bandwidth 6.5 nm
  • Sulphur II (SII) – 672.4 nm, bandwidth 6.5 nm
  • Oxygen III (OIII)  – 500.7 nm, bandwidth 6.5 nm
  • LRGB Color Imaging Package (four filters)
  • Narrowband Package – Ha, SII, OIII (three filters)
  • Deep Sky Package – L, R, G, B, Ha, SII, OIII (seven filters)


Clear passes all wavelengths but is parfocal with the other filters.


Spectral response for LRGB filters



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