Skip to content
Antlia

Antlia

In the era of high-quantum-efficiency CMOS sensors, Antlia has established itself as a leading manufacturer of astronomical filters that balance precision, performance, and value. Known for tight 3nm and 4.5nm narrowband tolerances, advanced coating technology, and the specialized LRGB-V Pro series, Antlia filters are engineered to maximize signal-to-noise ratio while minimizing halos and unwanted reflections. Designed for both light-polluted and dark-sky environments, they deliver high transmission of key emission lines with effective suppression of unwanted wavelengths. At David Astro, we carry an extensive in-stock inventory of Antlia filters, helping you capture cleaner data and achieve consistent, high-quality imaging results.

Filters

$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00

Antlia U-Venus Filter - 1.25"

ANT-UVENUS
1 in stock

Antlia Venus-U filter is designed for imaging the cloud structure of Venus and Jupiter with CCD cameras on a telescope. Cloud details primarily re...

View full details
$199.00 - $199.00
$199.00
$199.00 - $199.00
$199.00

High-Contrast Narrowband Imaging

Antlia’s narrowband filters are engineered with steep spectral profiles and high optical density (OD) blocking to isolate faint nebular signal with precision. These filters are well-suited for both traditional refractors and fast optical systems.

  • 3nm Pro & 2.5nm Ultra Series: Ultra-narrow bandpasses for Hydrogen-alpha (Hα), Oxygen-III (OIII), and Sulfur-II (SII), optimized for maximum contrast under light pollution or moonlight.
  • Highspeed Optimized Filters: Designed for fast systems (f/2 to f/3.6), with bandpass shifts to compensate for angle-of-incidence effects in RASA and Hyperstar configurations.
  • 4.5nm EDGE Series: Balanced option offering strong contrast with higher throughput, suitable across a wide range of focal ratios.

LRGB and Multi-Band Solutions

Antlia also provides well-matched broadband and multi-band filters for both mono and one-shot color (OSC) imaging. Their designs focus on consistent color balance and efficient data acquisition.

  • LRGB-V Pro Sets: Optimized for modern CMOS sensors, enabling balanced RGB channels and simplified calibration with consistent exposure ratios.
  • ALP-T Dual Band Filters: Isolate Hα and OIII (or SII and OIII) for OSC imaging, with strong suppression of artificial light sources.
  • Tri-band & Quad-band Filters: Useful for broadband targets in light-polluted environments by selectively transmitting key wavelengths.
  • Specialized Filters: Including IR-pass, Methane (CH4), and Calcium-K (CaK) for planetary and solar system imaging.

Coating Technology and Halo Control

Antlia filters are designed with advanced multi-layer anti-reflective coatings and blackened edges (on unmounted variants) to reduce internal reflections. This minimizes halos around bright stars and improves star profiles, reducing the need for corrective processing.

Why Choose David Astro for Antlia Filters

Selecting the correct filter depends on sensor size, focal ratio, and observing conditions. David Astro provides:

  • Curated Inventory: A wide range of Antlia filters in stock, including narrowband, LRGB, and multi-band options.
  • Technical Guidance: Assistance with filter selection based on your telescope, camera, and sky conditions.
  • System Integration: Support for filter sizing, thickness considerations, and avoiding vignetting in your imaging train.
  • Fast Shipping: Reliable delivery across Canada, the USA, and worldwide.

We help ensure your filter set is matched correctly to your system, so you can collect cleaner data with predictable results.