This product is no longer stocked and therefore cannot be purchased until further notice.
IDAS NBX 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.
•10nm each for OIII and Ha respectively
•Allows for f/2 optics without loosing the emission signals
•No IR blocker required