The Askar Colour Magic D2 Duo Band (SII & OIII) filter is an effective tool for capturing details of the sky with a color CMOS astro camera or camera. The filter significantly reduces the harmful effects of light pollution while enhancing the contrast of deep-sky object details.
The Askar Colour Magic C2 Duo Band filter targets the H-alpha and OIII emission lines, which are essential for observing interstellar gas nebulae and supernova remnants. The 2" size allows for easy integration into various astrophotography systems. Its advanced, albeit not overly imaginative, "Super" anti-reflection coating minimizes unwanted reflections to the greatest extent possible.
In the SII range, the filter operates with an 8.5 nm bandwidth, providing excellent performance at the 672 nm wavelength. In the OIII range, with a 6.5 nm bandwidth, it gathers information around the 500.7 nm wavelength, enabling detailed examination of planetary nebulae and other oxygen-rich objects.
- 2" size
- Over 85% light transmission
- 8.5 nm bandwidth in the SII (672 nm) range
- 6.5 nm bandwidth in the OIII (500.7 nm) range
The advantage of the filter is that when combined with the Askar Colour Magic D1 Duo Band filter, it allows the production of Hubble-palette-like false-color images even with a color camera.
