An image intensifier system centered round a four-stage cascade intensifier, EMI type 9694, is described, the image being recorded by a moving plate camera. Astronomical observations were made on the coudé spectrograph of a 30-in. (76-cm) telescope; the dispersion in the blue was 3 Å mm−1. The system was found to be capable of spectrophotometry, the limiting stellar magnitude being 9, and showed considerable gains over alternative techniques in high time resolution observations.
© 1968 Optical Society of America
Original Manuscript: December 11, 1967
Published: April 1, 1968
A. V. Hewitt and W. N. Charman, "The Use of a Cascade Intensifier in Coudé Spectroscopy," Appl. Opt. 7, 603-606 (1968)