Sometimes known as a PIPE in the US, although many curse that usage, and demand the use of Batten ; 'A pipe is what you smoke; a batten is what you hang your instruments from.' The brightest part of the beam from a lantern, usually showing the centre. SWATCH See also FULL UP FINISH. FILL LIGHT(especially TV and Film lighting) Light which fills the shadows that key light creates. This adjustment of focal length allows a single instrument to find many uses in various locations around the stage. Although the base provides a degree of support (especially with added brace weights) booms often require additional support from above. See ER, also ERF. Also known as PRESET. CLOVE HITCHInvaluable hitch that every technician should know.Video. A number of composite gobos in different coloured lanterns can, with careful focusing, produce a coloured image (e.g. He developed the lens for French lighthouses so that they could be seen further out to sea and could achieve a longer focal length with a lot less glass than a standard plano-convex lens. Stage Lighting Fixtures. DRESS REHEARSALA full rehearsal, with all technical and creative elements brought together. Refers to a 'live' power feed, which does not go via a dimmer. Cloth with a relatively coarse weave. Lights Down on Act One). A Rear elevation shows backs of scenic elements. Includes foyer areas open to the general public. The human brain automatically compensates for different colour temperatures - a film or video camera cannot, and thus what we see as white may appear to have a blue or green tint when no colour correction is used for video. French: contre-plong 'that was a good pick-up', 'your next pick-up is downstage left'). See also SPOT. Gerb: version of the Roman Candle firework, throwing a shower of sparks into the air. a Visual Cue). An increase in level from an existing state is known as a BUILD. FEMALE / MALE CONNECTORSThis terminology is beginning to change, as it's not very subtle, and sometimes isn't as clear as it could be. Metal framed wooden box on wheels with a removable lid used for transporting equipment between venues. Properly designed alarm systems incorporate timed isolation, so that smoke detectors are only off for a specific period, and automatically come on after that period. Holo-GauzeSee also Lighting With A Gauze / Scrim, GENERAL COVERThose lanterns in a rig which are set aside purely to light the acting areas. The terminator is very easy to make, and consists of a 120 Ohm half-watt resistor soldered between pins 2 and 3 of the XLR connector. MOVING LIGHTRemotely controllable "intelligent" lighting instrument. The scientific name for Voltage is Electromotive Force. credit-by-exam regardless of age or education level. BOOM BASE LEKO 2) (Trade Name) A remote control for a computer running QLab software. These project the pattern onto the stage to create various effects. The standard unit for measurement of electrical current passing through a circuit (usually abbreviated to AMP). 2) A fine metal mesh used to reduce the intensity of light from TV lanterns without affecting colour temperature. FLASH BOX Neater and cheaper than Gaffa tape. SUPER TROUPER By Allan Weitz | 9 years ago. A name given to a pipe batten used to support lighting equipment in a theater. 'There are 40 instruments in the rig - 20 moving lights and 20 conventionals'). In German, ZUGSTANGE. See also FRONT LIGHT, BACKLIGHT, CROSSLIGHT, DOWNLIGHT. Commonly refers to the 3-part ladder used on many stages around Europe. INFRA-REDInvisible part of the electromagnetic spectrum with a longer wavelength than visible light. The lowest lantern on a lighting boom. An electric current that reverses direction in a circuit at regular intervals. CEEFORM(UK / Europe) A range of standard plugs & sockets for power, which are IP rated for outdoor use. See also PATCH. CANS1) Headset earpiece, microphone and beltpack used for communication and co-ordination of technical departments during a performance. Animatronics "Clive exits through the downstage left wing") but they can be identified by number if there are too many exits, with the downstage wing starting as 1, with stage left and right added to identify the side (e.g. Sometimes flying pieces are given a number of extra deads, that may be colour coded, in addition to the 'in dead' (lower) and 'out dead' (higher - out of view). In theatrical lighting terms a circuit usually refers to the part of a lighting circuit which extends from the dimmer to the lighting instrument. Usually takes place before opening night. Designing and Focussing a General Cover. 2) A member of the cast of a musical or play who understudies one (sometimes more) of the principal roles but is NOT also in the chorus. Most video cameras have a 'White Balance' control to make colour temperature adjustments, to ensure white looks white on camera. The asymmetric reflector helps to throw light further down the cloth, producing a more even cover. It should be stored wet, and allowed to dry out just before use. 2) A headphone and microphone combination used in such communications systems with a beltpack. Each instrument is capable of a massive variety of effects which are operated live via a moving light control desk, or can be pre-programmed by a standard memory lighting desk. 'Focus that spot offstage a bit please') (e.g. Used instead of "instrument", "lantern" or "luminaire" due to the added complexity of the equipment and the need for additional control connections. A lamp containing a filament, reflector and lens in one sealed unit. BEAM ANGLEThe angle of the cone of light produced by a lantern. For this lesson, we'll focus on the fixtures and their two primary functions of accenting and washing. A higher colour temperature light source will appear whiter (colder). See also COLOUR CORRECTION. Often abbreviated to "Vis". a stained glass window). If a light source is placed beyond the focal point away from the lens, converging beams will result. A rehearsal call for the next day / week used to be posted on a Call Sheet on the stage door noticeboard, but is now often an online document, updated by the stage management team. It is difficult to start a running plot half way through; often the operator has to go back to the beginning and work through until the required point is reached. The fader is designed to be operated at it's optimal position which is labelled 0dB. 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