Filtre Antlia LRGB-V Série Pro

Filtre Antlia LRGB-V Série Pro

The Antlia LRGB-V Pro Series filters are designed for monochrome cameras using CCD and CMOS sensors, including KAF/KAI, Sony IMX, GSense, and other similar sensors.

Purpose & Benefits

The LRGB-V Pro set is engineered to closely match the RGB response of CCD sensors that are particularly red-sensitive. This allows for balanced 1:1:1 exposure times across the RGB channels, simplifying post-processing and reducing total imaging time.

Spectral Optimization & Light Pollution Suppression

These filters feature a carefully designed spectral gap between the green and red channels to:

• Minimize the effects of light pollution

• Maximize transmission of useful signal frequencies

• Improve detail capture from faint galaxies and nebular emission

The OIII line transmission exceeds 95% in both the Blue and Green filters, ensuring excellent detail in narrowband-rich targets.

Blue Channel Refinement & Halo Reduction

The Blue channel has been narrowed to reduce haloing around bright stars caused by overexposure.
A wide spectral gap between the Green and Red filters blocks emission lines around 589 nm, effectively suppressing light pollution from high-pressure sodium and mercury vapor lamps, resulting in a more natural color balance.

Key Features of the LRGB-V Pro Series

1. Premium Coating Technology & Precision-Polished Substrates

   • Highly homogeneous optical glass substrates

   • Dual-sided advanced optical coatings ensure parfocality and optical uniformity across all filters

2. Optimized Color Balance & Contrast

   • Carefully designed spectral bandpasses

   • High signal-to-noise ratio with anti-reflective coatings to reduce stray light and enhance signal fidelity

3. Tighter Star Profiles & Reduced Halos

   • High-frequency cutoffs specifically designed to reduce halos around bright stars and control star bloating, especially in the Blue channel

Applications & Performance

• Designed for monochrome CCD and CMOS cameras

• Excellent color imaging for deep-sky objects, including galaxies, nebulae, and star clusters

• Anti-reflection (AR) coating reduces internal reflections and star halos

• The Red filter ensures maximum transmission of H-alpha and SII emission

• B/G overlap boosts OIII response

• Balanced 1:1:1 RGB exposure design suitable for most telescope optical systems

• All filters feature edge blackening to eliminate internal reflections from stray light

• Substrate thickness tightly controlled across the LRGB set for parfocality

• Not recommended for solar observation or visual use

Technical Specifications

• Base Substrate: High-quality optical glass

• Filter Thickness: 2 mm ± 0.05 mm

• Surface Quality: 60/40 (per MIL-O-13830)

• Transmitted Wavefront: λ/4 or better

• Parallelism: < 30 arcseconds

• Construction: Single-substrate (non-glued)