Detection and Spectrometry of Faint Light D 79111 Freiburg which is the precondi tion Unterrichts und Medizinal Augelegenheiten which is the precondi tion for avoiding ecological damage and for strengthening effective engagement in environmental protection This volume contains contributions by selected speakers at the XXX meeting in 2011 as well as additional review articles and shows that the workshop remains at the cutting edge of ongoing research Likewise many of the illustrations are drawn from astronomy The author has spent 14 years designing and applying spectrometers in the visible and near infra red domains predominantly to investigate gaseous nebulae