• E. C. Pavlis 

JCET/UMBC & NASA Goddard 698, USA

epavlis@umbc.edu

• M. Pearlman

Harvard-Smithsonian Center for Astrophysics (CfA), USA

mpearlman@cfa.harvard.edu

• W. Gurtner

University of Berne, Switzerland

werner.gurtner@aiub.unibe.ch

• D. Paradissis

Dionysos Satellite Observatory, National Technical University of Athens (NTUA), Greece

dempar@central.ntua.gr

• K. Katsambalos

Faculty of Rural and Surveying Engineering, Aristotle University of Thessaloniki (AUTH), Greece

kvek@topo.auth.gr

• V. Vasiliev 

SRI for Precision Instrument Engineering (IPIE), Russia

lavaser@kmail.ru

• Y. Fumin

Shanghai Observatory, Academia Sinica, China

yangfm@shao.ac.cn

• T. Springer

European Space Operations Centre (ESOC), ESA

Tim.Springer@esa.int

• J. Davis

Harvard-Smithsonian Center for Astrophysics (CfA), USA

jdavis@cfa.harvard.edu