Skip to content
ZWO Seestar S30 Desktop
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Antlia ALP-T Dual Band Ha&OIII 3nm

Antlia ALP-T Dual Band Ha&OIII 3nm

by David Astro
SKU ANT-ALP-T-3NM-HAOIII
$390.00 USD - $390.00 USD
$390.00 USD
$390.00 USD - $390.00 USD
$390.00 USD
Price Match Policy!
  • 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
Availability:
Backordered
Contact us to know when we will receive our next ones!

Free Shipping in CONUS*

More information

  • Description
  • Specifications
  • In the Box

  • Antlia ALP-T Dual Band Ha&OIII 3nm - Overview

    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.

    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.

  • 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
    • HaOIII

      Ha&OIII Filter

      × 1