Filters and filter set 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

• 50mm Square Optical Filters