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SVBONY H-Alpha 2" 7nm Filter Narrowband Astronomical Photographic Filter Brand
H-A is 656nm mainly through the high permeability of the spectrum, and
656nm spectrum of the color presented by the red-based, 300-1100nm
cut-off depth to get the details of the launch nebula richer. Extremely
narrow bandwidth allows only the 656nm band to pass through the filter,
can effectively cut off the artificial light Na lamp and Hg lamp
interference to make the transmission line through, so as to improve the
nebula contrast. With CCD is better choice for deep sky photography and
- Optical high-precision double-sided polishing to ensure that does not affect the image quality of the image.
- Precision double-sided optical coating, non-two-piece glue, effectively improve the transmittance and cut-off depth.
- Electron Gun Evaporation Technology
source assisted coating technology (IAD), to improve the density of the
film to ensure that the filter wavelength to minimize the impact of
temperature caused by the temperature drift.
- High uniformity planetary wheel coating fixture to improve the uniformity of the filter wavelength
- Optical equipment professional fine sandblasting and anode treatment, the box to do extinction treatment to prevent reflection
- Laser engraving LOGO-never fades, fade
- Metal frame, superior aviation aluminum
- High cutoff is effective has been the light damage and other stray light interference
- Using Germany glass, using double-sided polishing processing
- For the emission line 656nm transmittance of 85% or more
- Frame with high-quality aluminum alloy material, anodized extinction treatment
- With SII, H-Alpha, OIII shooting, that SHO Filter, post-synthesis "Hubble"
narrow-band filter, even in areas where light pollution is heavy, and
the full moon (the moon's largest and brightest) is the same, very
narrow bandwidth, which reduces the interference of the external
environment, but the haze and cloudy The weather is not possible.
- Carton PP environmentally friendly materials, simple and beautiful
- Lined with double-layer EVA damping cotton
- Precision CNC integrated molding
- Multi-layers anti-reflection coating
- Thread: M48*0.75
- SVBONY H-Alpha 7nm 2"
- PP Material Plastic Box
Svbony focus on telescope and optical accessories. Aim to supply the high quality products and best service to customers. Main items are including Telescope, Monocular, Binocular, Spotting scope, filter, eyepiece and other accessories. We hope that you could enjoy a much more clorful life by using our products.
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On Sep-18-19 at 19:19:55 PDT, seller added the following information:
Filed under: Eyepieces & Accessories