He wrote numerous papers on photometry and spectrum analysis in Poggendorff's "Annalen" and "Berichte der k. sächsischen Gesellschaft der Wissenschaften", two works on celestial photometry ("Grundzüge einer allgemeinen Photometrie des Himmels", Berlin, 1861, 4to, and "Photometrische Untersuchungen", Leipzig, 1865, 8vo), and a curious book, "Ueber die Natur der Cometen" (Leipzig, 1872, 3rd ed.