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Askar Colour Magic 3nm Ha/OIII Duo Band Filter - 2 inch
ASK_2DB3
€630.00
Tax included
- Two narrow-band passbands filter
- OIII at 500.7nm
- H-alpha at 656.3nm
- FWHM: 3nm
- 2 inch mounted cell
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Must-have accessories
The new 2" Askar Colour Magic Duo Band Filter is the perfect narrow band filter for use with color imaging cameras.
The Askar 3nm duo-band filter has an extremely narrow bandwidth, and very high transmittance, over 88% at its center wavelength (500.7nm and 656.3nm).
This 3nm duo-band filter can effectively eliminate the influence of light pollution. Even if you image in an area seriously affected by light pollution, this Duo Band filter permits the capture of high quality data without bad light pollution gradients and color caste. The Askar 3nm Duo Band filter is perfectly matched for use with modern color sensors and ensures dramatically improved images of emission nebulae compared to shooting in broad band color.
The 2" Askar 3nm duo-band filter 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.
Specification
- 3nm Duo-Band Filter 2"
- FWHM: 3nm
- CW: 500.7nm & 656.3nm
- Peak transmittance: 88%
- Thickness: 1.85 ± 0.05mm
- Barrier property: ≥OD5 @ 200-1100nm
- Surface finish: 60/40
- Parallelism: 30"
- Filter Application
- Photographic
- Filter Type
- Dual Narrowband*~Ultra-Narrowband*~OIII*~H-alpha
- Filter size
- 2 inch (50.8mm)
Askar, based in China, specializes in producing innovative telescopes and astrophotography equipment, appealing to a wide range of astronomers. Their focus on compact and portable designs increases accessibility for users aiming to explore astronomy more comfortably.
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