If you use ChroTel data for your work, please use these citations. ChroTel Data is freely available for scientific and educational use. Published work based on ChroTel data should include an acknowledgement like:
ChroTel is operated by the Leibniz Institute for Solar Physics (KIS), Freiburg, Germany, at the Spanish Observatorio del Teide, Tenerife, Canary Islands. The ChroTel filtergraph has been developed by the Kiepenheuer-Institute in co-operation with the High Altitude Observatory in Boulder, CO, USA.