For all astrophotography enthusiasts, filters are one of the indispensable accessories to achieve perfect deep-sky imaging. The dedicated astronomy filters for deep-sky imaging can effectively eliminate the influence from the background light and enhance the contract of your photographs and make the targets displayed more clearly and delicately. Askar's newly-launched 6nm deep-sky Duo-narrowband Filter set colour Magic is a professional astrophotography tool specifically designed for deep-sky imaging.
Askar 6nm Duo-narrowband Filter (OIII & Ha) has an ultra-high transmittance over 90% at its center wavelength (500.7nm and 656.3nm). Therefore, even if you are at an area affected by urban light pollution, night glow and other undesired light, you can capture high-quality deep-sky pictures with the help of Askar 6nm Duo-narrowband Filters. The narrower bandwidth and efficient light transmission considerably enhance the contrast of your pictures, making it easier to display the details of the stars that otherwise are fairly difficult to spot. You can get astronomical images of high quality with just one duo-narrowband filter and an ordinary astronomical colour camera.
At the same time, the Colour Magic 6nm deep-sky Duo-narrowband Filter has very good halation control, providing more contribution to your astrophotography.
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:
- 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"
- 2" mounted filter cell with M48x0.75 male thread