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A searchlight (or spotlight) is an apparatus that combines an extremely bright source (traditionally a carbon arc lamp) with a mirrored parabolic reflector to project a powerful beam of light of approximately parallel rays in a particular direction. It is usually constructed so that it can be swiveled about.
Searchlight Control, SLC for short but nicknamed "Elsie", was a British Army VHF-band radar system that provided aiming guidance to an attached searchlight.By combining a searchlight with a radar, the radar did not have to be particularly accurate, it only had to be good enough to get the searchlight beam on the target.
The 200 cm searchlight was deployed at the center of a triangle formed by the 150 cm searchlights. The smaller searchlights deployed at a distance of about 2.5 kilometres (1.6 mi) from the larger central "master" searchlight. The master searchlight would find the target, and the 150 cm lights would cone the target, providing solid triangulation.
The searchlight turret included a station for an operator, who had the task of changing the light's carbon electrodes when they burned out. [1] The light emerged from a vertical slit that was just 2 inches (5.1 cm) wide by 24 inches (61 cm) tall, a small size which reduced the chance of battle damage to the optical system.
A searchlight set up at the Wesselton Mine during the Siege of Kimberley during the 2nd Boer War. Early in the Second Boer War, Colonel Robert Baden-Powell improvised searchlights to deter night attacks on his lines during the Siege of Mafeking.
Sky Trackers is a 26-part science-based [1] Australian children's television adventure series, and a stand-alone children's television movie of the same name, which feature the adventures of children who live at space-tracking stations in Australia.
The Turret type, fitted on Wellington aircraft, was a 24-inch (610 mm) searchlight mounted in a retractable under-turret controlled by hydraulic motor and ram. The maximum beam intensity was 50 million candelas without the spreading lens and about 20 million candelas with the lens. Total weight was 1,100 lb (500 kg).
Battery power for the 135 kW and 1,200 Amp searchlight was sufficient for about two minutes of operation. [3] The Havoc's own armament was removed from the nose. The radar fitted was the AI Mk.IV , with broad "arrow head" aerials protruding from the both sides of the aircraft nose with additional side-mounted, and upper- and lower-wing mounted ...