Askar Colour Magic C1/C2 Duo-Band Filter
Colour Magic C1 Duo-band filter (Hα+OIII) has a high transmittance of over 90% at its center wavelength (500.7nm and 656.6nm). It can effectively improve the quality of the image by making the sky background of the image darker while maximizing the contrast throughout the image， enhancing the contrast of your pictures, and making it easier to display the details of the stars. In areas with very serious light pollution, this filter can also selectively filter light pollution and cluttered signals through the emission lights of the nebula to achieve the ideal shooting effect
When shooting deep-sky galaxies with color cameras, a duo-band filter in the Hα +OⅢ bands is often used; whereas with a mono camera, a narrowband filter in the Hα, SⅡ, and OⅢ bands is often used, leaving users with color cameras missing one band of nebula detail. This can be compensated by using the Colour Magic C Duo-band filter (SⅡ+OIII) mentioned above.
Colour Magic C2 Duo-band filter (SII+OIII) has a high transmittance of over 90% at its center wavelength (500.7nm and 672nm). It can effectively improve the quality of the image by making the sky background of the image darker while maximizing the contrast throughout the image， enhancing the contrast of your pictures, and making it easier to display the details of the stars. In areas with very serious light pollution, this filter can also selectively filter light pollution and cluttered signals through the emission lights of the nebula to achieve the ideal shooting effect.
Using the Colour Magic 2” C duo-band filter package can effectively improve the contrast of the image, making it easier to bring out the detailed features of objects that would otherwise be difficult to capture. It'll be able to take high-quality deep-sky images even in areas affected by urban light pollution and other light sources.
We name the Hα+OⅢ Duo-band filter “C1”, and the SⅡ+OⅢ as “C2”, so their combination is the Colour Magic C 2" Duo-band filter package. It enables color camera users to shoot without the mono camera and H/S/O narrowband filter, providing more fun of astrophotography.
With efficient and excellent imaging performance and, a fun and innovative shooting experience, let Colour Magic C duo-band filters become your great tool to capture the beautiful moments of the universe!
Technical Specifications
Askar C1 Duo-band Filter (OIII & Ha) 2”
FWHM:
OIII：35nm±5nm/Ha：15nm±3nm
CWL:
500.7nm & 656.6nm
Peak transmittance:
90%
Thickness:
2 ± 0.05mm
Barrier property:
OD3 @ 200-1000nm
Surface finish:
60/40
Askar C2 Duo-band Filter (OIII & SⅡ) 2”
FWHM:
OIII：35nm±5nm/SⅡ：15nm±3nm
CWL:
500.7nm & 672nm
Peak transmittance:
90%
Thickness:
2 ± 0.05mm
Barrier property:
OD3 @ 200-1000nm
Surface finish:
60/40
In the Box
Warranty & Manuals
Askar Warranty
