Astronomy Specialist

ZWO NARROWBAND

ZWO narrowband filters enhance the contrast of emission and planetary nebulae.聽These peculiar nebulae emit light only in specific wavelengths (H饾浖; OIII ; SII) and the narrowband filters聽have the property聽to reject all聽light outside these bands.

The passing band or "window" of these filters is 7nm wide. Considering that the visible light spectrum spaces between 380nm and 740nm, a 7nm filter would block 98% of the unwanted light. As a result, the signal to noise ratio between the light of the nebulae (signal) and the noise (moonlight, light pollution, airglow) is highly increased.聽

Nebulae have a strong emission on the band of the hydrogen (H饾浖), oxygen (O III) and the sulfur (S II). Having 3 wavelengths in 3 different areas of the visible spectrum, it is possible to recreate a false colour image of a nebula.聽

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ZWO NARROWBAND FILTERS 1.25"
From $209.00 - $599.00
ZWO NARROWBAND FILTERS 31mm
From $249.00 - $699.00
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ZWO NARROWBAND FILTERS 36mm
From $269.00 - $749.00
ZWO NARROWBAND FILTERS 2"
From $399.00 - $1,199.00
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