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