Delfi-C3 is a CubeSat satellite constructed by students at the Delft University of Technology in the Netherlands.

It is a 3-unit CubeSat,[1] and was launched at 03:53:42 on 28 April 2008,[2] as part of the NLS-4 mission,[3] aboard a PSLV rocket, from the Second Launch Pad at the Satish Dhawan Space Centre in India.

Some other mission characteristics include: The Delfi-C3 ground segment consists of two command ground stations, the primary being in Delft and the backup station at the TU Eindhoven in Eindhoven.

For data collection, a distributed ground station network (DGSN) is used in which radio amateurs receive packets and sent these via internet to the central data collection server.

Data decoding is possible with the free RASCAL software provided by the Delfi-C3 team.