IDAS Ha 6.8nm Filter Class STD (2.5mm)



Class STD(Standard), which is suitable for most of telescopes

  • Ha 6.5 +/- 0.1nm (measured value)
  • 98% transmission rate (measured value)
  • Class STD
  • 2.5mm thickness
  • Optimized from F3.5 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
  • Made in Japan
  • IDAS is a trademark of ICAS Enterprise, Japan

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Additional information

Class STD

50.8mm, M52 mounted, M48(2") mounted


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