Antlia LRGB-V Pro Series 2″ Filter Set

Antlia LRGB-V Pro Series 2″ Filter Set

The Antlia LRGB-V Pro kit is specially designed for monochrome cameras equipped with CCD and CMOS sensors (type KAF/KAI, Sony IMX, GSENSE, etc.). Thanks to advanced optical design and high-precision manufacturing, it delivers balanced 1:1:1 RGB images while maximizing the capture of detail in galaxies, nebulae and star clusters.

Kit contents

• Luminance filter (IR/UV-blocked, neutral)
• Red filter (R)
• Green filter (G)
• Blue filter (B)

Key features

• RGB response equalization for 1:1:1 exposure times
• Spectra adjusted to reduce light pollution between green and red
• High transmission on OIII lines in B and G channels (>95%)
• Blue channel design reduces halos around bright stars
• Double-sided anti-reflective coating to minimize unwanted light scattering
• High-quality optical surface with S/D 60/40 quality
• One-piece, double-sided polished substrate for excellent focus retention (parfocality)
• Targeted elimination of light pollution (high-pressure sodium and mercury lamps)

Performance and Applications

• Astrophotography of galaxies, nebulae and star clusters
• Contrast maximization for faint objects
• Excellent spectral separation for easy color processing
• For use with high-speed and standard optics

Technical Specifications

• Substrate: Single-piece, unglued optical glass
• Filter thickness :
  • 2mm ± 0.05mm for mounted 1.25″, 2″ and unmounted Ø31mm, Ø36mm
  • 3mm ± 0.05mm for unmounted Ø50mm
• Surface: S/D 60/40 (MIL-O-13830)
• Transmitted wavefront: λ/4 or better
• Parallelism: <30 arcsec

Support features

• Mounted: 1.25″ (M28.5×0.6) and 2″ (M48x0.75)
• Unmounted: Ø31mm, Ø36mm, Ø50mm
• Ultra-thin cell to minimize vignetting
• Black anodized finish with unalterable laser engraving

How to use

• Regularly check focus during long imaging sessions
• Anticipate thermal variations between indoors and outdoors
• Manual or automatic focus recommended every 1 to 2 hours

Not recommended for

• Solar observation
• Visual observation at night

Safety warning

• DO NOT use to observe the Sun. This would cause serious eye damage.