Antlia LRGB-V Pro 31 mm unmounted

Antlia LRGB-V Pro 31 mm Unmounted Filter Set for Professional Astrophotography

The Antlia LRGB-V Pro 31 mm Unmounted Filter Set is expertly designed for professional astrophotographers who use monochrome cameras with CCD and CMOS sensors. This comprehensive set of LRGB filters ensures superior image quality and performance.

Each filter is crafted with precision on a robust 2 mm substrate, guaranteeing exceptional mechanical durability and complete parfocal performance. To maintain optimal performance in varying temperatures, it is recommended to check focus every one to two hours during your astrophotography sessions.

Significant effort has gone into selecting the precise bandwidth and intervals between spectral lines crucial for astrophotography, including Hα, S II, and O III. The R filter achieves an impressive 95% permeability for the Hα and S II lines, while the overlapping B and G filters enhance recording efficiency for the O III line.

These filters offer exceptional optical efficiency. By separating the G and R channels, they effectively block light pollution from sodium lamps. Combined with multi-layer anti-reflective coatings, astrophotographers can capture vivid, high-contrast images even near urban centers.

Note: The Antlia LRGB-V Pro filters are not suitable for visual observations.

Key Features of the Antlia LRGB-V Pro Filter Set:

• Designed for professional astrophotography with equal weights for R, G, and B channels.
• Suitable for use with CMOS and CCD sensors.
• Advanced multi-layer anti-reflective coatings minimize glare and halo effects.
• High transmission rates for Hα and S II bands (R filter) and O III (B and G filters).
• Effectively blocks light pollution from sodium lamps.

Technical Specifications:

• Filter Type: LRGB bandpass filters
• Filter Diameter: 31 mm
• Filter Thickness: 2 ± 0.05 mm
• Filter Shape: Round
• Parfocalism: Yes
• RGB Channel Weights: 1:1:1
• Anti-Reflective Coating: Full multi-layer coating (FMC)
• Maximum Transmission for L Filter: >95%
• Transmission Range for L Filter: 420 - 715 nm
• Maximum Transmission for R Filter: ~95%
• Transmission Range for R Filter: 600 - 710 nm
• Maximum Transmission for G Filter: ~95%
• Transmission Range for G Filter: 480 - 580 nm
• Maximum Transmission for B Filter: ~95%
• Transmission Range for B Filter: 420 - 520 nm
• Blocking Light Pollution: Sodium lamps (598 nm, 589.6 nm)
• Surface Quality Index (MIL-O-13830 standard): 60/40
• Parallelism: <30"
• Execution Accuracy (RMS): λ/4 or better

Included in the Set:

• Antlia LRGB-V Pro L Filter (Luminance)
• Antlia LRGB-V Pro R Filter (Red)
• Antlia LRGB-V Pro G Filter (Green)
• Antlia LRGB-V Pro B Filter (Blue)

Warranty:

The Antlia LRGB-V Pro filters come with a three-year manufacturer's warranty covering delamination of the filter and substrate, ensuring peace of mind and protection for your investment.