The European Space Agency Tender

Short Activity Description: This Activity Will Convert Three Astronomical Sites In Greece (helmos On The Peloponnese, Skinakas On Crete And Holomondas Near Thessaloniki) Into Optical Ground Stations (ogs) That Shall Be Able To Perform Optical Communication And Quantum Key Distribution Operations. Those Operations Will Initially Not Be Required 24/7 And It Must Be Possible To (quickly) Change Their Optical Configurations Back To Perform Astronomical Observations.the Required Developments And Installation Are: Low Earth Orbiting (leo) Satellite Telescope Tracking System At Speeds (>1 Deg./sec.) With Pointing Accuracies (<1mrad). Telescope Insertion Loss Minimized For The Optical C-band (1530 - 1565nm) And L-band (1565 - 1625 Nm). Optical Data Transmission Corresponding To The Space Development Agency (sda) Standard, Prepared For Data Rates Up To 10 Gbps Optical Data Reception Corresponding To The Space Development Agency (sda) Standard, Prepared For Data Rates Up To 10 Gbps Adaptive Optics For Atmospheric Turbulence Compensation And Coupling The Received Light Into A Single Mode Fibre. Generic Quantum Channel Where The Used Wavelength Can Be Arbitrarily Chosen In The Optical C- And L-bands. Laser Safety Installations. Autonomous Operation Capability.