The High-speed Intensified Camera Attachment (HiCATT) is designed for use with a high-speed camera. The HiCATT increases the sensitivity of a high-speed camera and allows low-light-level imaging applications at frame rates up to 200.000 fps. The HiCATT F-mount and C-mount connections offer optimal flexibility and are available in both 18mm and 25mm input diameter. The technology in the HiCATT expands the dynamic range of a high-speed camera. At low light-level input, even single photons can be detected. While at high light levels, overexposure is prevented by the use of very short gate pulses (down to 40ns), bringing down the duty cycle of the image intensifier up to 10,000 times. Moreover, these short exposures yield sharp images of fast moving objects. Features For use in combination with Hi-Speed cameras operating at speeds up to 100.000 fps Wide selection of image intensifiers (see configurations) Up to 25mm output image diameter, matching with the larger high-speed image sensors. Standard C-mount or F-mount input and output. Low Jitter Interface With the Low Jitter Digital interface (HiCATT 25D), gain and gating of the image intensifier HiCATT can be controlled by software. The Low Jitter Digital interface also supplies the DC voltages for the HiCATT high-speed camera attachment and the gating electronics. When connecting a trigger output signal from an attached high-speed camera to the Low Jitter Digital interface, gating is synchronised with the exposure period and frame rate of the high-speed camera. In this set-up, we attached the HiCATT Gen 3 to a VEO 710 high speed camera to view an Argolight slide at 400, 8,000 and 30,000 FPS on a Leica DMI8000 wide field microscope
Flames (mix Butane - Propane) at 4200 fps and 40 µs gate open time (effective exposure time), HiCATT 25 image intensifier, high-speed camera attachment with Phantom V4.0 high-speed camera.
Electronic Discharge at 47,000 fps and 3µs gate open time (effective exposure time), HiCATT 25 image intensifier, high-speed camera attachment with Phantom V7.1 high-speed camera.
Non-Intensified vs. Intensified recording of a gunshot with a Phantom V7.1 high-speed camera.
Non-Intensified vs. Intensified recording of a flame with a Phantom V7.1 high-speed camera.
Blue gas flame, recorded at 100.000 fps (resolution 128x64) and 1µs gate time, made with the HiCATT 25 in combination with the Phantom V7.1.
Gas combustion observed at 20,000 fps with HICATT High Speed Image Intensifier, Gen 2, 10µs exposure time.
Gas combustion observed at 5,000 fps with HICATT High Speed Image Intensifier, Gen 2, 10µs exposure time.
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Applications
movie 1: recorded at 15.000fps and 61µs gate open time (effective exposure time).
movie 2: recorded at 15.000fps and 2µs gate open time.
movie 1: recorded at 4.000 fps and 230µs gate open time (effective exposure time) - lens fully open (F1.4).
movie 2: recorded at 6.000 fps and 3µs gate open time (effective exposure time) – lens stop (F6), with the HiCATT25 image intensifier.
