The XHC6060B-ABF delivers 4280 m person detection at 0.0003 lux via a 65 mm F1.2 ABF monochrome lens, extending passive night detection 1280 m beyond the colour variant for coastal perimeter and maritime surveillance.
Coastal and border perimeter surveillance programmes that have deployed colour starlight cameras at medium range are finding a recurring operational limitation at the darkest hours of the night cycle: the illumination floor of colour CMOS systems at 65 mm class focal lengths leaves a detection gap in overcast pre-dawn conditions when natural light drops below the colour sensitivity threshold but thermal alternatives introduce cost and export complexity that programme budgets cannot absorb across all sensor positions. Monochrome variants at the same optics resolve that gap by offering approximately twice the raw sensitivity, extending continuous passive person detection through conditions where colour imaging has already transitioned to its detection limit.
Extended Detection Range Through Monochrome Sensitivity
The XHC6060B-ABF achieves person detection to 4280 m at 0.0003 lux minimum illumination at 25 fps, extending the colour XHC6060C-ABF detection range by 1280 m through monochrome CMOS operation at identical 65 mm F1.2 optics. The 0.0001 lux floor at 5 fps positions the sensor among the most sensitive passive EO cameras available at this focal length, providing coverage continuity through overcast starlight and heavily obscured sky conditions. Recognition reaches 1070 m and identification 670 m day and night per US NVESD standards.
Night Coastal and Maritime Perimeter Applications
Coastal surveillance operators monitoring vessel approach lanes and shoreline perimeters at night benefit from the XHC6060B-ABF precisely because maritime environments present the lowest ambient light levels of any fixed surveillance application: open water reflects minimal starlight, weather-induced overcast eliminates moon contribution, and artificial lighting is absent across most monitored approach segments. At 4280 m detection range, the XHC6060B-ABF provides the outer detection trigger for coastal observation posts in passive monochrome mode. ABF remote focus supports installation on coastal infrastructure including lighthouse masts and cliff-mounted brackets where manual focus adjustment is impractical after installation.
Monochrome and Colour Nodes in a Combined XHC6 Network
Perimeter networks that combine monochrome B-series sensors at outer detection nodes with colour C-series sensors at recognition and identification nodes achieve both maximum passive detection range and colour identification capability within a single XHC6 Series infrastructure. All XHC6060 and XHC6160 variants share ONVIF, RTSP, and PELCO protocol compliance over RJ45 with Wi-Fi and optional 4G LTE, presenting a unified interface to VMS platforms regardless of whether the specific node is operating in colour or monochrome mode.