Stock photos provided by the manufacturers may not represent the actual item. Please verify this picture accurately reflects the product described by the title and description before you place your order.

SBIG 50 mm Square Optical Filters (Deep Sky Package LRGB + Ha + SII + OIII)

SBIG 50 mm square optical filters are compatible with FW7-STX filter wheels, which work with STX-16803 and Aluma AC4040 cameras.  These filters are built for SBIG to our exacting specifications.  All filters are parfocal, which avoids unnecessary refocusing.



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
  • Hydrogen Beta (Hb) – 486.1 nm, bandwidth 8.5 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



Customers Reviews

Share your opinion with other customers

Write a review