High Signal to Noise Observations with a Photon Counting Array

Abstract

A simple high speed image widener is described which allows effective count rates of up to lOOhz to be achieved with photon counting detectors thus allowing rapid accumulation of high signal to noise data in bright star spectroscopy. Physics, 23-25. 23 G. Cayrel de Strobel and M. Spite (eds.), The Impact of Very High S/N Spectroscopy on Stellar