Here is a spectra of AD Leo an M class Red Dwarf that is known to flare. The red is 20s *107 images unfiltered and blue a single 20s exposure with a Gaussian filter set at 4 in ISIS. Not normalised or dark subtracted hence the offset and hight differences.
True rookie errors. Spectra red to blue, interloper star and not well aligned spectra to CMOS rows! Still waiting for the rotator to ease some of these issues.