Antlia LRGB-V Pro 1,25

The Antlia LRGB-V Pro L is a comprehensive set of LRGB filters designed specifically for professional astrophotography. These filters are ideal for use with monochrome cameras, whether equipped with CCD or CMOS sensors.

Each filter in the set is meticulously crafted on a carefully selected substrate, ensuring a thickness of 2 mm. This not only provides excellent mechanical strength but also guarantees full parafocalicity. It is recommended to keep in mind temperature fluctuations and periodically check the focus, approximately once every hour or two, as per the manufacturer's recommendation.

The designers of the Antlia LRGB-V Pro filters have invested significant effort into achieving optimal transmission of key spectral lines crucial for astrophotography, such as Hα, S II, and O III. This involved careful selection of the width of the transmitted bands and the intervals between them. The R filter, for example, achieves an impressive 95 percent transmission for the Hα and S II lines. Additionally, by overlapping the operating ranges of the B and G filters, the recording efficiency of the O III line has been doubled.

Impressive optical efficiency is just one of the exceptional features of the Antlia LRGB-V Pro filters. The separation of the G and R channels effectively blocks the primary light pollution emitted by sodium lamps. Combined with multi-layer anti-reflective coatings, these filters enable vivid and contrasting images, even when capturing celestial objects near densely populated urban areas.

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, designed for use with CMOS and CCD sensors.

• Advanced multi-layer anti-reflective coating reduces secondary glare and the halo effect.

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

• Effective blocking of light pollution emitted by sodium lamps.

Technical Specifications:

• Filter type: LRGB bandpass filters

• Filter diameter: 1.25"

• 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 (according to MIL-O-13830 standard): 60/40

• Parallelism: <30"

• Execution accuracy (RMS): λ/4 or better

• Frame: Black, anodized

• Thread: M28.5x0.6

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, covering delamination of the filter and substrate.