As corona discharge emits the light of Solar Blind Ultraviolet (SBUV) from 240 to 280 nm, the corona sparks can avoid the interference of sunlight when an object is detected in the SBUV region. To detect the position and intensity of the corona spark precisely, a solar blind ultraviolet and visible camera based on the beam-split scheme developed by ourselves was introduced. Then,a high resolution catadioptric SBUV telescope with a large entrance pupil of 68 mm and a focus length of 180 mm was designed, and the circuit boards for image processing were given based on the DSP chip TMS320DM642.The DSP/BIOS and RF5 were used to schedule the acquisition, display, compression and store,and the weighted average algorithm was applied to image fusion. An experiment outdoor was carried out to take photos for the spot UV source of a mercury lamp and the background far from 90 m in a sunny hot summer day. As a result, the UV, visible, and fusion pictures are obtained clearly. Furthermore, some suggestions were put forward to improve the performance of the camera.