303 or ceiling 302 of booth 300 and may comprise a light diffuser that spreads the light coming through light transmitting conduit 317 throughout interior space 305 in addition one or more exposers 319 may be mounted on the end of a flexible reflective tube 320 extending from light transmitting conduit 317 thereby allowing exposer 319 to be moved around automobile 306 e g by robot 321 to achieve a more complete exposure of hard to reach surfaces of automobile 306 at least one of the components of the skylight tube systems may be fitted with means for blocking uv radiation from exposing automobile 306 during the application of uv cured paint as one example exposer 318 may be fitted with a retractable cover 323 that covers exposer 318 during the application process but which may be retracted to uncover exposer 318 during the curing process in addition one or more of the skylight tube system components may include any of the previously mentioned optical devices used to modify the radiation contained in the sunlight transmitted thereby in another embodiment the present invention provides a method of curing a light cured material which comprises the steps of applying a light cured material to an object placing the object in an interior space of a structure having associated.