varying instrument response

Forums Spectroscopy Relative Flux Calibration varying instrument response

john simpson

Thanks David, Andrew, for your comments & also the Buil reference . No condensation trails at my location, but it is loch-side surrounded by hills & conditions sometime change quickly. Once I’ve sorted out my stray-light problem, I will set an evening aside to track a couple of targets to see the extent to which my observations change over the period of time.