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SVBONY Narrowband H-Beta Telescope Filter Enhance Contrast of Nebulae Observe
- CNC machined and black anodized aero-metal filter cell that is ultra-thin to provide largest clear aperture
- Laser-engraved to prevent fading
- Multiple layers of anti-reflection non-cementing coatings applied via electron-beam gun evaporation with Ion-assisted deposition
- Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces
value transmission of pass-band and optical density of off-band is
assured through Optolong's planetary rotation system, a homogenous and
precise coating procedure
- Each filter comes with a plastic case with high pressure EVA case lining
- Best used with a moderate to large aperture telescope and clear, dark skies
The filters are not designed for sun observation. DO NOT LOOK AT THE
SUN WITH this FILTER. You would be BLIND if you fail to observe the
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.
Svbony has set up US/AU/UK/ES/DE/IT/FR oversea warehouses, trying to offer customers speedy best local service. We are a passionate and extraodinary team, committed to offering good products and keeping customers satisfied with their purchase.
Our goal is to make sure you are a happy customer and pleasant shopping with us.
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Filed under: Eyepieces & Accessories