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IDAS NB3 Filters

$175.91 $87.96

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IDAS NB3 Contrast Boost Dual Line-Pass Filter

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The NB3 filter is a dual line-pass filter which can be used with one-shot color (OSC) cameras such as DSLR’s or astronomical OSC cameras.

Passing the red SII and the blue-green OIII lines, the NB3 filter enhances the contrast of these lines found in emission nebulae without the time-consuming use of single-band filters. The resulting images can be used for luminance contrast enhancement of traditional RGB-balanced images or creation of images in various popular false-color palettes.

Note that a base filter which provides IR blocking is required in combination with this filter (see example at right).


NB3 Filter (withNGSfilter to block IR) Band-pass Plot — Click toenlarge

NB3/NGS filtered image example. TheNGSfilter provides the IR blocking required for using the NB3 filter. Click toenlarge

Veil Nebula – NB2/NB3 combined final image. Click toenlarge