River of Light


by Cat Strom.

A highlight of last month’s Brisbane Festival was the free illumination spectacle River of Light held on the Brisbane River.

The 10-minute show ran three times a night for the duration of the Festival and included dynamic jets, giant spirals of water, full-colour lighting, rainbow-coloured lasers and incredible story telling via projections.

Following the phenomenal success of the 2018 telling of a Dreamtime creation story of the river – seen by almost 500,000 people – this new local story was again told by Yuggera and Toorabul man Shannon Ruska working with Oracle-Liquid.

This year Ruska and Oracle-Liquid told the next chapter: the arrival of Europeans.

Oracle-Liquid has earned a reputation as one of Australia’s leading creators of water theatre spectaculars involving fountains, lighting, lasers and projections. They design and manufacture high quality fountain technology, laser show equipment, water screen displays, turn-key automated installations and high impact stage performance technologies.

All the gear for River of Light was supplied by Oracle-Liquid except for one key piece of gear that they do not own – a projector.“When we need video projection we usually hire the gear and of course we put that in the quote,” explained Glenn Turner, Director of Oracle-Liquid.

“You’re talking considerable costs for video projectors which often is outside the client’s budget and so we decided we had to get creative or lose the job.”

On a mission to work out a way to project full colour imagery without using costly video projectors, Glenn and his team found a solution with Claypaky Scenius and custom glass gobos. “Once we’ve sourced and edited the images, especially to the correct colouring for use in a lighting fixture, we get the glass gobos made,” added Glenn.

“We put them in the Scenius and then when we project them, we move them and use the pan and tilt, oscillate, rotate and all those functions of the lighting fixture to make it look like it’s a moving image.

“For example, a boat sailing along the waves rocks back and forth as well as moves from left to right and gets smaller as it sails away. All these parameters require many fixture functions to trick the audience into thinking that they’re watching video.”

The gobos were rear projected onto the fountains which were uplit by 140 submersible LEDs. “The reason why we have four Scenius is that they can only take six rotating gobos, which makes it quite hard to create a show,” said Glenn.

“We had two water screens with two Scenius projecting onto each screen and that gave us 12 gobos per water screen, which is tricky for a 10-minute show where you’re telling a story.”

Twenty no-name Chinese beam and wash fixtures also had gobos which could be used to fill in gaps, as do the lasers. The story was occasionally transitioned into a dancing fountain, light and laser show, which not only made the story telling entertaining, it also allowed for a more theatrical experience.

“We purchased the Chinese fixtures because they’re exposed to water and salt air, and we didn’t want to buy or hire expensive high end products and put them at risk,” Glenn remarked.

“We added domes and special filtering to them and that worked really well so then we decided to start moving into higher end fixtures. Having said that, the Chinese fixtures are quite impressive especially as they do both beam and wash. In fact for their price, they’ve been fantastic.”

Also of note were eight Claypaky Sharpys which featured Oracle-Liquid’s custom laser fixture on them. A favourite in many productions, the Sharpy Laser combines a Sharpy and a powerful 6 watt colour laser resulting in labour and logistics savings.

Control was by Oracle-Liquid’s custom fountain software which also features a full 3D visualizing system in it allowing the team to program nearly the entire show in the studio beforehand.“Then when we get on site it’s just a case of plotting everything and adding the extra magic,” said Glenn.

“Before we had the visualiser, we would spend a week of long nights programming which was very tiring after you’ve spent weeks installing the system.”

The whole effect was created by a floating rig weighing more than 25 tonnes, with music switching between styles to give the 10-minute performance pace culminating in a burst of colour and fanfare.

CX Magazine – Oct 2019   Entertainment technology news and issues for Australia and New Zealand – in print and free online www.cxnetwork.com.au
© CX Media

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