STELLAR SPECTRA RECONSTRUCTION FROM SPECKLE SPECTROSCOPIC DATA .2.

In the previous paper [AJ, 105, 665 (1993)], we described speckle spec troscopic instrumentation and presented some observational results wit h data acquired by our speckle spectrometer. The shift-and-add method was used for the data reduction in the previous paper. We have revised the speckle spectrometer to augment the performance. The cross-correl ation method is newly introduced for data reduction. The spectra of si ngle stars gamma Cas and alpha Per are reconstructed in nearly diffrac tion-limited angular resolution with the resolved Halpha emission and absorption lines, respectively. It is shown that the cross-correlation method is superior to the shift-and-add method in the narrow bandwidt h region. The results of alpha Per are compared with the photometric m easurement of Procyon's spectrum which has the similar spectral type a s alpha Per and they are shown to be fairly consistent. The new system exhibits a sufficient performance to enable us to make the quantitati ve spectral analysis and the cross-correlation method produces the hig her SNR results.