Astronomik SII 6nm CCD Filters

$299.00$749.00 AUD

The SII 6nm CCD-Filter allows you to isolate almost completely the most subtle detail from the SII line. The gain in contrast will be enormous and is especially useful in combating heavy light pollution in urban areas.

  • Guaranteed transmission of at least 90% at SII (672nm) (typical is ~96%)
  • Suitable for scopes down to f/4. MFR coating process eliminates shift in transmission with different focal ratios
  • Full-Width-Half Maximum (FWHM): 6nm
  • Perfect blocking of unwanted light from UV right through the IR region
  • Filter thickness 1mm – parfocal with all other Astronomik filters
  • 10 year guarantee – insensitive to moisture and aging. Scratch resistant
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