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The Antlia LRGB-V Pro series filters are designed for monochrome cameras that use both CCD and CMOS sensors. Suitable sensors include KAF/KAI sensors, Sony IMX sensors, GSENSE and other sensor manufacturers. The LRGB-V Pro set is designed to approximately equalize the RGB response from the flux of red-sensitive CCD detectors.
The result is that you achieve 1:1:1 equalized RGB exposures with the benefit of simplified post processing and reduced imaging time. New LRGB-V Pro series filters feature a carefully designed spectral gap between the green and red channels to minimize the effect of light pollution and to provide high transmittance of useful frequencies. The filters’ design maximizes the capture of details from fainter galaxies and nebulae emissions. The LRGB-V Pro series filters guarantee the high transmission of the OIII band in both the B and G filters (OIII signal >95% in blue and green). The bandwidth of the B channel is narrowed for the purpose of improving the blue channel overflow (haloing) around the star due to B channel overexposure. Antlia LRGB-V Pro series filters block the emission line around 589nm by the design of wide gap between G and R filters, which suppresses much of the light pollution from high pressure sodium and mercury street lamps and results in a more natural color balance. The uniformity in substrate thickness delivers good parfocal performance across all Antlia filters.
Important Note: When using any parfocal filters, the user may still experience focus shifts between filters during long imaging sessions. It is important to remember that temperature shifts will change the length of the optical path due to the differential contraction between the telescope tube and the glass optical elements. It is recommended that the photographers check focus either manually or automatically in software every 1 to 2 hours. In cases where the telescope has been brought from a warm environment to outside, more frequent focus checks are required until the equipment has stabilized nearer to ambient temperature.
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