Chromator-Kc167-bortle2014_R1&Chromator-Kc167-li2015_R1&Chromator-Kc167-li2015_R2 3423 Chromator-Kc167-li2015_R1 534 Chromator-Kc167-bortle2014_R1&Chromator-Kc167-li2015_R2 501 Chromator-Kc167-li2015_R2 13 Chromator-Kc167-bortle2014_R1 13