Status
The IHFRI provides imaging (and spectral) information at a rate of 1000 frames per second for detection of ablation anomalies, flicker in bowshock emissions, spacecraft rotation, and wake.
This instrument consists of a 6 inch clear aperature f0.75/105 mm lens and 256 x 256 pixel intensified CCD camera. The field of view is 6.25 x 6.25 degrees, illuminating 11.5 x 11.5 mm of the photocathode of the intensifier. The intensifier phospher has a brief decay time constant of 0.8 ms, ideally suited to study the natural afterglow in rapidly moving targets. It can be equipped with a low dispersion 7 inch 300 l/mm grating, providing a spectrum from 500 nm (15.9 mm from zero order) to 900 nm (29.4 mm from zero order) just outside the field of view. Spectrum can be recorded by pointing away from the SRC and will help target acquisition by providing a ray directed to the zero order.