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Holiday Schedule: The showroom will be closed from Dec 22nd to Jan 2nd. Support will not be available in that period. 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$932.00 - CA$932.00
CA$932.00
CA$932.00 - CA$932.00
CA$932.00
Credit available from affirm logo
  • 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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2 in stock

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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

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