Colour Magic Super D1 Duo Narrowband Filter (OIII&Ha)

Askar 6nm Duo-narrowband Filter (OIII & Ha) has an ultra-high transmittance over 90% at its center wavelength (500.7nm and 656.3nm). Askar 6nm Duo-narrowband Filter can effectively eliminate the influence of light pollution. Even if you are in an area seriously affected by light pollution, the pictures taken with the Askar 6nm Duo-narrowband Filter are still very good. You can get astronomical images of high quality with just one duo-narrowband filter and an ordinary astronomical colour camera.

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Product introduction

Askar 6nm Duo-narrowband Filter (OIII & Ha) has an ultra-high transmittance over 90% at its center wavelength (500.7nm and 656.3nm). Askar 6nm Duo-narrowband Filter can effectively eliminate the influence of light pollution. Even if you are in an area seriously affected by light pollution, the pictures taken with the Askar 6nm Duo-narrowband Filter are still very good. You can get astronomical images of high quality with just one duo-narrowband filter and an ordinary astronomical colour camera.

 

Askar 6nm Duo-narrowband Filter (OIII & Ha) is ideal for photographing emission nebulae, planetary nebulae or supernova remnants, and has a very high transmittance at the central wavelength. The highly narrow bandwidth of the filter effectively blocks out the effects of light pollution or other distracting factors such as night glow.

Specifications

6nm Duo-narrowband Filter (OIII & Ha) 2”

FWHM

6nm

CWL

500.7nm & 656.3nm

Peak transmittance

90%

Thickness

1.85 ± 0.05mm

Barrier property

≥OD5 @ 200-1100nm

Surface finish

60/40

Parallelism

30”

 

 

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