Application of a photodiode array detector to an arc spectrograph

Abstract

A multiple array photodiode detector was interfaced to a medium quartz spectrograph with a d.c. arc source. The detector replacing the photographic plate consists of nine photodiode arrays, giving a total of 9216 diodes for the set. Full spectral coverage from 2000 to 10 000 Å is achieved by staggering the arrays so that approximately 40 diodes of one array overlap with the next array. The calibration and sensitivity of this system are discussed.