The Michelson Interferometric Stellar Oscillation Spectrometer (ISOS) has been developed and used over the past several years. It has the capability of measuring the relative radial velocity curve of a bright star to an accuracy of ~1ms−1 or less after a few nights on a moderately sized telescope, This is barely sufficient to detect oscillations in Solar type stars, A truly positive detection of such oscillations may be achieved with the increased signal obtained by using more than the one absorption line used at the moment.