IDAS Ha 6.8nm Filter Class STD (3.0mm)




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

  • Ha 6.8nm (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
  • Made in Japan


Additional information


50.8mm, M52, Di


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