Antlia LRGB-V Pro 50 mm unmounted

The Antlia LRGB-V Pro L is a comprehensive collection of LRGB filters specifically designed for professional astrophotography setups, compatible with both CCD and CMOS monochrome cameras.

Each filter in this set is meticulously crafted on a carefully selected 2mm thick substrate, ensuring not only mechanical durability but also maintaining full parafocalicity. It is recommended to account for temperature fluctuations and periodically check focus, roughly once every one to two hours, in accordance with the manufacturer's recommendation.

The designers of the Antlia LRGB-V Pro filters have invested significant effort into optimizing the transmission of key spectral lines essential for astrophotography, such as Hα, S II, and O III. Through precise selection of transmission band widths and intervals, the R filter achieves an impressive 95 percent transmission of Hα and S II lines. Moreover, the overlapping operational ranges of the B and G filters effectively double the recording efficiency of the O III line.

Exceptional optical efficiency is just one of the standout features of the Antlia LRGB-V Pro filters. The separation of the G and R channels effectively blocks the primary lines of light pollution emitted by sodium lamps. When combined with multi-layer anti-reflective coatings, these filters enable astrophotographers to capture vivid and high-contrast images even in proximity to large urban centers.

Please note that the Antlia LRGB-V Pro filters are not recommended for visual observations.

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

Professional astrophotographic filters with equal weights for R, G, and B channels, specifically designed for CMOS and CCD sensors.

Advanced multi-layer anti-reflective coating reduces secondary glare and halo effects.

High transmission for Hα and S II bands (R filter) and O III (B and G filters).

Excellent light pollution blocking capability for sodium lamp emissions.

Technical Specifications:

• Filter type: LRGB bandpass filters.
• Filter diameter: 50 mm.
• Filter thickness: 3 ± 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.
• Light pollution blocking: Sodium lamps (598 nm, 589.6 nm).
• Surface quality index (according to 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).

Guarantee:

The Antlia LRGB-V Pro filters come with a three-year manufacturer's warranty that covers delamination of the filter and substrate.