The flight camera would look very similar. This is how the camera could look like. The idea here is that even if a few images do not contain real meteors that would be acceptable. Mass and power are typically severly limited on space missions. Breadboards were built and demonstrated that the designs are feasible. Table 1 summarizes the main characteristics of the flight models. They developed special software, which for the breadboard runs on a standard Windows PC. A total of six proposals were received on the Invitation To Tender for this study, two of which were excellent and selected to be financed. For this paper, the limits for mass and power are of interest.
A total of six proposals were received on the Invitation To Tender for this study, two of which were excellent and selected to be financed. To calculate the expected number of meteors and to have more boundary conditions for the design of the camera, two reference missions were given. The idea was to detect meteors at least to a magnitude a visual observer would detect. The camera shall allow to determine the time of an event to an accuracy of 10 s. It was demonstrated that the cameras work according to specification. The radiation environment, maximum and minimum operating temperatures etc. This is how the camera could look like. The characteristics of the proposed flight models from the two companies. Interestingly, the real field of view is very close to that of the all-sky cameras of the European Network using deg fish-eye lenses, namely a circular area of about km diameter. The expected numbers around Mars are very similar — on Mars, there is also a chance to see impact events, which are more abundant compared to the Earth due to the thinner atmosphere. It can be expected that between 5 to 50 meteors per hour of recording can be seen from an orbit as the ISS. A commercial camera is available from the company Andor, the so-called iXon camera. This is extremely important as it is currently impossible to downlink video data streams from planetary space missions. Build a breadboard, which demonstrates that the design is feasible, using off-the shelf components where possible; Test the breadboard on ground, both in the lab and under real-sky conditions. This fast lens allows to fulfil the requirements without a special sensor and their camera uses a standard back-illuminated thus more light-sensitive CCD. For this paper, the limits for mass and power are of interest. Table 1 summarizes the main characteristics of the flight models. However, it does not have the disadvantages of a normal photomultiplier, which is mechanically sensitive and would need high voltage in the order of kilovolts. Apparent field of view of a camera with a viewing angle of deg circular observing the Earth from the International Space Station. Figure 1 shows a graphical visualisation of the field of view of a camera with deg viewing angle as seen from the ISS in an atmospheric height of about km, where meteors occur. For their breadboard, they built one of these lenses, however using standard glass materials rather than special radiation-hard glasses which would be required for a space application. The EMCCD incorporates a stage which multiplies the charge generated by the incoming photons, it acts like an on-chip photomultiplier. This camera could address a number of scientific goals better than current space cameras, which are optimised for day-side imaging: Imaging, from orbit, of electric discharges, e. Perform a scientific analysis, in particular estimate the expected number of meteors per time, for the baseline camera in the baseline mission; Produce a design for a flight-worthy camera on paper for both hard- and software and estimate the resource requirements mass, volume, power.
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