The illumination of the Domes
Financed entirely by the Fundación Iluminar Luz y Color para Cuenca
, a new lighting project for the domes of the cathedral started in October 2018 in conjunction with the relevant structural restoration works of the domes themselves. The authorities of Cuenca required low energy consumption and environmentally friendly LED luminaires to light up in white and blue tones the imposing domes of the cathedral, with the possibility to switch to different colours according to the festive or religious occasions of the city.
Iván Genovéz, former director of Fundación Iluminar Luz y Color para Cuenca, along with Eng. Walter Morocho, Technical Manager and now ad interim Director at the same municipal organization, coordinated the phases of design, planning, commissioning and installation of the project, which was completed after the required tests on November, 23 and finalized at the conclusion of the architectural renovation work on the third dome at the end of April 2019.
Based on the lighting design and relevant photometric calculations conceived by Eng. Walter Morocho of the Fundación Iluminar, GRIVEN’s lighting designers just had to advise the best possible optics combination for the chosen fixtures in order to achieve the required illumination level. The approved lighting design wanted to deliver to the three domes of the church a static white light enhancement on the drums and a dynamic colour changing effect on domes, lanterns, and cupulas.
A series of PARADE S
in cold white configuration with elliptical and elliptical wide optics were therefore installed at the base of the drum of the two side domes, while for the central, larger dome a further line of PARADE S was required at the top of the windowed drum, too. A total of 64 PARADE-S-W units, either with 40 or 60 LEDs according to the length of the available space, deliver a beautiful shade of intense cold white to the lower parts of the domes.
As for the coloured parts, an amazing shade of sky blue with a uniform distribution has been reached with the help of POWERSHINE MK2 in the single and double bank version installed on the spires in front of the three domes. Fitted with medium optics on both LED modules, 12 units of POWERSHINE MK2 D in RGBW
colour configuration were strategically located in groups of 4 around the three domes; using the same concept, 12 units of POWERSHINE MK2 in the single bank
version complete the light distribution up to the highest part of the cupulas.
Managed via Power CDI Commander, a dedicated programming software for the architectural lighting equipment, all GRIVEN products allow a complete visualization of the colour changing scenes, with selectable colour change speed and interval times helping a fast programming procedure.
"In some occasions the prelates of the Catholic Church have asked us for example during the Holy Week, to deliver a purple color to the cathedral and now we will be able to do it ...", said Iván Genovéz, very safisfied with the final result of the installation. The night view on the city is really amazing: the coloured domes are visible from far away and draw the attention with their architectural perfection and amazing allure even at night.