IDAS NBZ Filters are designed to enhance the contrast of Hα and OIII emission nebula, yet accommodate the filter spectral shift when used with modern fast optical systems. This dual-band filter is ideal for one-shot color cameras as well as mono-color astronomical cameras.

Features include:

• Ideal flat-top bandpass
• Excellent in-band transmission
• Off-center bandpass accommodates off-axis rays for fast optics (up to F2)
• Steep bandpass edges minimize internal reflections
• No IR blocker required
• Available in 52mm and 48mm sizes
• 2.5mm thickness (parfocal with other IDAS LPS filters)
• IDAS-proprietary IGAD/MBT/UFP quality
• Made in Japan