IDAS Ha 6.8nm Filter Class STD (3.0mm)



IDAS Ha 6.8nm standard version, which is suitable for most of telescopes

  • Ha 6.5 +/- 0.1nm (measured value)
  • 98% transmission rate (measured value)
  • Class STD
  • 3.0mm thickness
  • Optimized from F3.6 to any
  • Fully blocks up to 1200nm as illustrated in the plot
  • Each filter is individually inspected and measured for quality
  • Comes with the actual measured plot with the unique product code(except 36mm)
  • Made in Japan
  • IDAS is a trademark of ICAS Enterprise, Japan

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Additional information


50.8mm, M48(2"), 36mm


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