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Antlia ALP-T Golden Dual Band Filter - 2-inch

Product Image
Antlia
ANT-ALP-T
SKU
ANT-ALP-T2

The Antlia ALP-T Golden Dual Band Filter - 2" (5nm) is recommended for astrophotography in areas with light pollution, designed specifically for use with one-shot colour (OSC) CMOS cameras.

 

OUR PRICE $649.00

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    Develop clean imagery and suppress light pollution.

    Key Features

    - Impressive signal-to-noise ratio with an optical density (OD) suppression of 4.5 on unwanted visual wavelengths (300-1100 nm)

    - Maximises transmission of the Red H-Alpha (Ha) and Blue-Green OIII Main Nebula Emission Lines

    - Performs well with focal ratios greater than f/3, with contrast increasing as focal ratio increases

    - Ultra-thin filter cell

    - IR/UV-Cut filter

    The Antlia ALP-T Golden Dual Band Filter - 2" (5nm) features advanced multi-coatings to effectively isolate and maximise the transmission of the Red H-Alpha (Ha) and Blue-Green Oxygen III Nebula Emission Lines.

    You'll also notice suppressed light pollution from artificial sodium vapour / mercury vapour lamps, as well as less natural light from atmospheric sky glow (neutral oxygen emission) and moonlight.

    With each filter individually tested, the Antlia ALP-T Golden Dual-Band Filter - 2" (5nm) creates exceptional contrast for cleaner images, meaning that you'll spend less time in post-production isolating those faint details in your images.

    EXERCISE CAUTION: The Antlia ALP-T Golden Dual Band Filter 2-inch (5nm) is not suitable for looking at the Sun. Serious eye damage may result.

     

     

    Optics Central also offers an unmounted variant of the Antlia ALP-T: the Antlia ALP-T Golden Dual Band Filter - 36mm (5nm).

    For telescopes with faster focal ratios (between f/3.6 and f/2.2), the Antlia Fast Golden Dual Band Filter - 2" or the Antlia Fast Golden Dual Band Filter - 36mm are more suitable.

     

    Specifications

    Technical Specifications
    FWHM 5nm
    Central Wavelength (Hydrogen-Alpha) 656.3nm
    Peak Transmission (Hydrogen-Alpha) 90%
    Central Wavelength (Oxygen III) 500.7nm
    Peak Transmission (Oxygen III) 82%
    Blocking ≥ OD4.5 @ 300-1100nm
    Filter Glass Thickness 2mm +/- 0.05mm
    Filter Ring
    2" M48*0.75
    Finish: Anodised Black
    Filter Cell: Ultra-Thin (minimises vignetting by maximising possible clear aperture)
    Laser Engraving

     

    Antlia: Experts in Astronomy Filters

    Antlia Astronomy Filters are built by Deep-Sky Photography Enthusiasts for Enthusiasts 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: ALP-T

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