Astromania 1.25'' H Alpha Night Sky Filter
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Product details
| Management number | 200580176 | Release Date | 2025/09/21 | List Price | $43.82 | Model Number | 200580176 | ||
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The Night Sky Hydrogen-Alpha Filters Are Long-Pass Filters With A 50% Transition From Blocking To Passing At About 640Nm. At Wavelengths Longer Than 650Nm, Transmittance Is 80% Or Above. The Filter Is Used As An Extreme Anti Light-Pollution Filter, And For Contrast-Enhancement Of Emission Nebulae And Other Astronomical Objects Bright In The Infrared. The 1.25'' Night Sky Hydrogen-Alpha Filter, Threads Into The Nose-Piece Of Industry-Standard 1.25'' Digital Imagers. The Astromania H-Alpha Cut-Off Filter Enhances The Contrast Between Object And Sky, Allowing You To Take Good Quality Images Even Under Urban Skies.
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