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Holiday Schedule: We’ll be taking a short break from December 24th to December 29th to enjoy the holidays. During this time, the store will be closed, no orders will be shipped, and support will be unavailable. Happy Holidays!
Antlia ALP-T Dual Band Ha&OIII 3nm + SII&Hb 3.5nm 2" Filter Set

Antlia ALP-T Dual Band Ha&OIII 3nm + SII&Hb 3.5nm 2" Filter Set

by David Astro
SKU ANT-ALP-T-3NM-KIT
CA$1,008.00 - CA$1,008.00
CA$1,008.00
CA$1,008.00 - CA$1,008.00
CA$1,008.00
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  • Precise Narrowband Filtering for Exceptional Contrast
  • Enhanced Transmission for Superior Signal-to-Noise Ratio
  • Anti-Reflection Coating to Reduce Halo Effect
  • Optimized for Fast Optics up to f/2
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  • Description
  • Specifications
  • In the Box

  • Antlia ALP-T Dual Band Ha&OIII 3nm + SII&Hb 3.5nm 2" Filter Set - Overview

    Antlia ALP-T Dual Band Ha&OIII 3nm + SII&Hb 3.5nm 2inches Filter Set

    The Antlia ALP-T Dual Band Filter Set is a high-performance toolset designed for astrophotographers who demand precision, contrast, and exceptional image quality. This set includes the Ha&OIII 3nm Filter and the SII&Hβ 3.5nm Filter, providing unmatched narrowband imaging capability for capturing deep-sky objects with remarkable clarity and detail.

    High Signal-to-Noise Ratio

    Superior imaging in challenging light conditions.

    Versatile Applications

    Suitable for capturing traditional RGB images or creating artistic false-color palettes.

    Easy Integration

    Compatible with optics slower than f/4, with high-speed versions available for faster setups.

    Why Choose the Antlia ALP-T Filter Set?

    Combining these filters allows astrophotographers to capture the four key emission lines (H-alpha, OIII, SII, Hβ) in unparalleled detail. The advanced multi-coating technology suppresses light pollution, moonlight, and airglow while delivering outstanding contrast and clarity. Whether you’re imaging from urban or rural locations, this filter set ensures breathtaking astrophotography results.

    Ha&Oiii

    Ha&OIII 3nm Filter

    This dual narrowband filter isolates the H-alpha (656.3nm) and OIII (500.7nm) emission lines, optimized for use with color cameras. With a Full Width Half Maximum (FWHM) bandwidth of 3nm, it effectively blocks unwanted wavelengths, including light pollution, moonlight, and airglow. The result is an enhanced signal-to-noise ratio and strikingly detailed nebula images.

    • Precise Transmission: Passes H-alpha and OIII lines exclusively for improved contrast in celestial images.
    • Exceptional Filtering: Blocks optical density (OD) 4.5 on stray wavelengths, suppressing light pollution and enhancing nebula visibility.
    • Ideal for OSC Cameras: Designed for color cameras, with applications in luminance filtering for monochrome cameras.
    • Flat-Top Bandpass: Reduces spectrum shifts for consistent imaging performance, even under varying conditions.

    SII&Hβ 3.5nm Filter

    The SII&Hβ filter captures the deep red Sulfur-II (672.4nm) and blue Hydrogen-Beta (486.1nm) emission lines, providing complementary spectral data to the Ha&OIII filter. It’s perfect for creating detailed narrowband images and vibrant false-color palettes.

    • Dual Narrowband Capture: Captures SII and H-beta lines simultaneously for rich spectral imaging.
    • Enhanced Imaging Contrast: Blocks optical density (OD) 4.5 on unwanted wavelengths, optimizing contrast even in light-polluted conditions.
    • Creative Color Palettes: Enables various combinations like H-O-Hβ or S-H-O for unique astrophotography.
    Sii&Hb

  • Ha&OIII 3nm Filter

    FWHM

    3nm

    Peak Transmission

    90% (H-alpha), 82% (OIII)

    Blocking

    ≥ OD4.5 (300-1100nm)

    Filter Thickness

    2mm

    Ring Design

    Ultra-thin filter cell with M48*0.75 thread to reduce vignetting

    SII&Hβ 3.5nm Filter

    FWHM

    3.5mm

    Peak Transmission

    90% (SII), 85% (Hβ)

    Blocking

    ≥ OD4.5 (300-1100nm)

    Ring Design

    Ultra-thin and black anodized to minimize reflections
    • HaOIII

      Ha&OIII Filter

      × 1

    • SiiHb

      Sii&Hb Filter

      × 1