Robust, miniaturised cameras land on comet’s surface

The miniature cameras, able to fit in the palm of a hand, use very little energy, weigh 100g each, can take high-definition black and white images and resist incredibly low temperatures of -150°C. There are seven identical visible spectrum cameras on the lander, five of which were designed to take single images, with a pair set aside for a stereoscopic, or 3D, view of the comet’s landscape.

Each camera is a complex system comprising highly miniaturised electronics, state-of-the-art miniature optics, signal conditioning and processing as well as a data communication interface and a customised mechanical interface.

3D stackable electronics allow for considerable size reduction, whilst the optics, mechanics, software and communication modules are customised to bear the punishing conditions of space travel. CSEM was the prime contractor and helped develop the flexure-based assembly, a single piece of titanium with an internal spring that is machined into the structure, in a process known as Flextec, to precisely assemble the optics and electronics. This also enables retraction and expansion during extreme heat fluctuations.

Jean-Luc Josset, Director, Space Exploration Institute, formerly Project Manager, CSEM, explains; “The development of this type of technology opens the doors for highly-demanding missions, and is an example of the skills CSEM is able to offer.”