Abstract
An unconventional, highly sensitive camera system is described, suitable for silicon or amplified silicon (SIT or EBS) vidicons. Features are a variable field size and sweep rate and a low-noise video amplifier. Used on a 91-cm telescope, it can detect 15th magnitude stars with the silicon vidicon. With an SIT tube, the limit is 17 on the 91-cm and 20.5 on the 4-m telescope. The system is briefly compared with an I-SIT camera.
© 1976 Optical Society of America
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