Some Flash buttons on submasters can be set to latch (ie they stay on when pushed, until they are pushed again). Also applies to sound effects / music. BELTPACKPart of the communication ('cans') system in a theatre, the Beltpack contains the controls and circuitry to drive the HEADSET worn by crew members. Enables two identical 110 Volt loads to be safely run from a 240 Volt supply (UK). RIG CHECK(also known as LAMP CHECK) The process of checking all lanterns in the rig are working correctly prior to each performance. 2) The period of time to which the above call refers. FRESNEL 'We're just focussing the dips now') Steel is stronger and lighter weight compared to timber of the same size.3) Generic term used for a plain wire rope sling. A sample of fabric to demonstrate the material to use on a costume or set design, or a sample of lighting gel. SUBMASTEROften shortened to SUBS. The WATT is a measure of electrical power. FLIGHTCASE / FLIGHT CASEMetal framed wooden box on wheels with a removable lid used for transporting equipment between venues. STATEIn lighting terms, a lighting 'picture' ; each lighting cue results in a different state (or a modified state). Stage lighting equipment is rated in Watts (or Kilowatts - 1kW being equal to 1000W). a stained glass window). HALF KA 500W lantern (usually Fresnel or PC) - K refers to Kilowatt (1000 Watts). 2) The area out of sight of the audience (e.g. Material from 1967 uses the word 'MASK', and no mention is made of 'GOBO', so we can assume the word wasn't in widespread use then for stage lighting. dimmers). Normally said during lighting plotting sessions or technical rehearsals. 1) Originally "tableaux curtains" which drew outwards and upwards, but now generally applied to any stage curtains including a vertically flying front curtain (house tabs) and especially a pair of horizontally moving curtains which overlap at the centre and move outwards from that centre. Or, a spigot can be attached to a scaffold clamp or a T bar to enable multiple lanterns to be rigged. 'Can you foot this for me please? Pinspots are ideal for lighting MIRRORBALLs. 'Flood that a bit, please!'. across the stage). across the stage). 4) Film : 35mm film projection is common in many theatres as a device for keeping the building open to the public when productions are in preparation. ~ TALLESCOPE For this lesson, we'll focus on the fixtures and their two primary functions of accenting and washing. Lighting designed to illuminate an object from behind, which causes an appealing glow effect around its edges. Rectangular area in the corner of a lighting plan (often bottom right) containing the name of the show, director, scenic and LX designer names, date of the plan, scale, and other copyright information. HOT POWERRefers to a 'live' power feed, which does not go via a dimmer. For example, a 13 - 15A jumper has a 13A plug and a 15A socket at either end of a short cable. Two fixtures fulfill this role, ellipsoidal spotlights and followspots: Wash lighting, or washes, uses lights without such defined edges to the beam and sometimes dimmer lights to create a soft illumination for the general stage area. Providing a low level of lights to an open stage while the audience enter the house up until the performance starts. Automated versions are available which have colour changers built-in and are able to tilt up and down. CANS1) Headset earpiece, microphone and beltpack used for communication and co-ordination of technical departments during a performance. Also known as BARE ENDS, TAILS refers to a cable or set of cables with a connector at only one end which is used for connecting a company's equipment directly to the mains supply in a venue. FIRE EXTINGUISHEREssential tools of the pyrotechnician's trade ! Used with an objective lens to produce the desired size of image. Used heavily for dance lighting as it lights the body of the performer without casting shadows upstage, and it is far more sculptural than front light. CP coded lamps are for Film, Television and Photographic studio use and have a colour temperature of 3200°K. Electricity is generated and supplied to large installations as three separate supplies, known as phases, and labelled L1, L2 and L3 (for Line). See also CP, T, P2, K. ABTT Many lighting bars are internally wired (and are known as IWBs or Internally-Wired Bars), featuring cabling inside the bar and sockets mounted at regular intervals along the bar, and a connection box at one end to enable the bar to be plugged into dimmers. Neater and cheaper than Gaffa tape. FOCUS SPOTTerm for both Fresnel and PC type lanterns with adjustable beam size.Types of lantern. See Fresnel, PC, Profile. 110V Par lamps are still sometimes used in large UK venues or for touring due to the increased light output. A measure of the ability of a light source to reveal the colours of objects faithfully in comparison with an ideal or natural light source. Sometimes shortened to just 'F' (e.g. Most venues do not have the electrical capacity to run all lanterns at full for a rig check, so a level of 25% is normally used. If a screen is not self-supporting, it often has eyelets around the outside edge which are used to 'lace' the screen onto a larger frame.See also PROJECTION. Developed in the late 1970s and first used on the Channel Track console. There are many different variations of pyrotechnic effects available. In common with many theatre jobs, the actual duties of the Chief Electrician vary from theatre to theatre. Fully searchable, our glossary is helpful for technical staff, directors, actors, producers, or anyone wanting to better understand the inner workings of theatre. LED stage lighting instruments are stage lighting instruments that use light-emitting diodes (LEDs) as a light source. "Electrics on cans", "Going off cans", "Quiet on cans!"). A.L.D. The degree to which a medium passes light, measured in terms … See the link below for information. Once defined, the focus point can easily be recalled and used in multiple cues. See also TOPLIGHT. is it a downlighter, or is it backlighting or sidelighting), there's a danger that the cable will restrict movement when the lantern is focussed more accurately during the focus session, wasting time while the cable or safety wire is released. (US) Short for Ellipsoidal Reflector - type of fixed beam profile lantern common in the US. 2) A fine metal mesh used to reduce the intensity of light from TV lanterns without affecting colour temperature. Example usage: 'The lamp in the DSC fresnel has blown'. A cue that happens so soon after a previous cue, that it doesn't need to be cued separately. Lighting and sound cues are called for by the stage manager, following along in … A fade out takes the lighting state to blackout (or a particular sound to silence). The first smoke machines came onto the market in the late 1970s. Now used for effect in rock concerts etc. Lanterns hung at the very ends of lighting bars - used for crosslight and very common in dance or musical theatre. STAGECRAFTStagecraft refers to any technical aspect of theatre production (and also sometimes refers to film / TV production). Lamps: lighting term for light bulbs used in theatrical equipment Fixtures: the light fixture holding the bulbs; if it has no lens it is called an 'open-face fixture'. A flash or sudden jump in light level (a snap cue) (see also FLASH BUTTON). Type of lantern which produces an intense beam of light, ideally suited to "punching" through strong colours, or for special effect. A window within the set which has to open is a practical window. "Act One Beginners to the stage, please". TAILSAlso known as BARE ENDS, TAILS refers to a cable or set of cables with a connector at only one end which is used for connecting a company's equipment directly to the mains supply in a venue. For example, if a spotlight is added into Cue 2, it will remain on at that level through subsequent cues until a cue where all cues fade out, or a cue where that spotlight is specifically recorded at zero. Gobelin Fabric is used for tapestry making and has a less coarse weave than theatrical gauze, but will work for smaller shows. A phenomenon seen when tungsten halogen lamps are dimmed which results in the light output becoming warmer (lower in colour temperature) as it becomes dimmer. (from WIkipedia) a dome-shaped muscular partition separating the thorax from the abdomen in mammals. A DMX run should always be terminated, and although the system may work without one, continued operation cannot be guaranteed. See PLAN. Many moving lights use a similar system with dichroic colours which are more efficient and longer-lasting. Preview enables the operator to see the levels of dimmers and other information in a lighting state other than that on stage. Also known as a flash pod or firing pod. The lighting … For technical cues, lights are normally now used just as a backup to cues given over the headset system. Many theatre buildings have complex fire alarm systems installed. There are hundreds of gobo designs available - common examples are breakup (foliage), windows and scenic (neon signs, city scapes etc.). (in USA, this term is used for a lighting plan and a lights session is when lighting states are set up.). Until recently, the three lines were colour-coded Red, Yellow and Blue in the UK. Another great leap forward !. A 'Company Call' means the full cast and crew are called for the rehearsal. Now short for Prism- or Pebble-convex: a type of lens with a pebbled flat surface which gives a slightly harder edge than a Fresnel, but not as hard as a Profile. GET-OUTMoving an entire production out of the venue, and back into storage or into transport. Cues in the UK is produced by a lantern of a followspot on a platform to. 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