NB Filter Family

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IDAS NB1 Contrast Boost Filter

NB1 Filter Bandpass Plot -- Click to enlarge

The NB1 filter is a triple line-pass filter which can be used with one-shot color (OSC) cameras such as DSLR's or astronomical OSC cameras.

Passing the red Hα+NII and the green-blue Hβ+OIII lines, the NB1 filter enhances the contrast of emission line nebulae without the time-consuming use of single-band filters.


More on other members of the NB filter family...

Emission Lines Filter Sizes Base Filter
NB1 Triple - Hβ+OIII, Hα 48mm & 52mm None required
NB2 Dual - OIII, Hα 48mm, 52mm, Canon Drop-in Required*
NB3 Dual - OIII, SII 48mm, 52mm, Canon Drop-in Required*
  * In-camera IR blocker works as the base filter.