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Antlia Quadband Light Pollution Filter - 2-inch
The Antlia Quad Band filter is designed to cancel orange/yellow wavelengths and enhance deep-sky object clarity in areas with moderate light pollution.
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Capture breathtaking celestial wonders like never before, even under city lights, with the Antlia Quad Band Anti-Light Pollution Filter. This innovative filter unlocks vibrant details invisible to the naked eye, offering astrophotographers a powerful tool to push the boundaries of deep-sky imaging.
Specifications:
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Glass thickness |
2.0 mm ±0.05 |
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Optical flatness |
1/4 λ (wavefront) |
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Bandpass transmission |
> 92% |
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Off-band transmission |
OD4 @ 300-1050 nm |
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Coating |
Double-sided multilayer nano-coating |
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Surface quality |
60/40 (in accordance with US military watch MIL-O-13830) |
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Parallelism |
30" |
Spectrum Specifications:
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H-alpha |
Sii |
Oiii |
H-beta |
Nii |
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Wavelength |
656.3nm |
671.6nm 672.4nm |
495.9nm 500.7nm |
486.1nm |
658.3nm 654.8nm |
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Peak Transmission |
>92% |
>92% |
>92% |
>92% |
>92% |
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Blocking |
≥OD4@300-1050nm |
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Filter Thickness |
2nm+/-0.05mm |
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Key Features:
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Unveils faint objects: Blocks intrusive artificial light from sodium vapor lamps, mercury vapor lamps, and skyglow, revealing hidden treasures like galaxies, nebulae, and star clusters.
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Broadband and narrowband versatility: Works with a wide range of targets, including both broadband objects like the Whirlpool Galaxy and narrowband emission nebulae like the Lagoon Nebula.
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Fast optics compatibility: Optimized for telescopes with focal ratios as fast as f/2, ideal for capturing faint details quickly.
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Near-infrared (NIR) transmission: Captures vital signals from certain deep-sky objects, often missed by standard filters, thanks to modern camera sensitivity and reduced artificial light pollution in the NIR region.
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Exceptional halo suppression: Ensures sharp, clear images of even faint objects near bright stars, perfect for capturing the Horsehead Nebula or other challenging targets.
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High-quality construction: Features edge-blackening for superior stray light control and individual testing for guaranteed performance. The parfocal design ensures the focus remains consistent when switching filters.
Additional Notes:
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Not recommended for fast refractors due to potential chromatic aberration.
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For optimal performance with color cameras, ensure a compatible AR-cut window is present.
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Available in 2" mounted size.
Unlock the potential of your astrophotography with the Antlia Quad Band Anti-Light Pollution Filter. Experience the universe in stunning detail, even from light-polluted skies.
Disclaimer: Never look directly at the sun through any Antlia filter. Serious eye damage may occur.
Antlia: Experts in Astronomy Filters
Antlia Astronomy Filters are built by Deep-Sky Photography Enthusiasts for Enthusiasts of Astrophotography all around the globe. Antlia prides itself on producing a series of exceptional quality, fully multicoated narrowband, dual-band, planetary and LRGB filters for astrophotography, designed for use with a range of monochrome and colour DSLR, CMOS and CCD cameras.
Product Code: ANT-QUADBAND-2