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ATS officers-in-training crew a 90 cm searchlight in Western Command, 1944. 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.
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.
At the outset of the war, searchlights were combined with acoustic direction-finders, with the direction-finders guiding the searchlights to the right part of the sky, where they swept until they found the target. Later in the war, the searchlights were radar-directed. The searchlights used extremely high-powered carbon arc lamps.
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.
Automatic Tracking Satellite Dishes are satellite dishes used while a vehicle, boat or ship is in motion. Automatic tracking satellite dishes utilize gyroscopes , GPS position sensors, and uses unique satellite identification data and an integrated DVB decoder to aid in identification of the satellite that it is pointing at.
For night and adverse weather use, many EO sensors incorporate low-light light-amplification systems. Some pods supplement the basic visual EO with forward-looking infrared (FLIR) to aid in locating and identifying targets in darkness. Such systems are sometimes called infrared search and track sensors.
Candles are obtained by collecting pieces of light (called wax in game) and forging them, or by purchasing them for real money. "Hearts" are the social currency of Sky, and are obtained when players receive gifts from others, or can be bought directly from spirits with candles. Hearts are primarily used to purchase cosmetic items from spirits.
A barn door tracker, also known as a Haig or Scotch mount, is a device used to cancel out the diurnal motion of the Earth for the observation or photography of astronomical objects. It is a simple alternative to attaching a camera to a motorized equatorial mount .