X-ray telescope door One of three x-ray telescopes The OM telescope One of three x-ray telescopes X-ray telescope door Electronic platform Electronic platform Gratings Propellant (in yellow) and the thruster (in red) Propellant (in yellow) and the thruster (in red) Main body of the telescope Outgassing device EPIC cameras The end cap
XMM Satellite Schoolpage

The Design Page (Back) Cameras

IMAGE - One of the European Photon Imaging Cameras (EPIC)

    EPIC is the CCD camera system which will be used to collect images from the XMM spacecraft. The system includes two separate designs (one p-n and two MOS), which will be positioned in the focal plane of each of XMM's three X-ray telescopes.

    The p-n Camera shown above is an X-ray Charge Coupled Device (CCD) which comprises an array of 6x2 separate devices, each device having 64x200 pixels. The devices are arranged on a single wafer so as to give a square field of view. The p-n camera will be used with one of the three telescopes.

    The other two telescopes will both use MOS cameras- another new design currently being developed by a consortium including the University of Birmingham. This CCD camera consists of an array of 7 chips, each of 600x600 pixels. As with the p-n devices, these chips are arranged around the telescope axis to give the total field of view but the central one is set back because the telescope's focal surface is slightly curved.
     All these detectors respond to high energy particles in the earths radiation belts and in cosmic rays, as well as to x-ray photons. However, the particles produce tracks which can be recognised when processing the data on the ground, and thus eliminated.
     To find out more about EPIC externally, click here and follow the links to instrumentation.

The University of Birmingham 

Physics and Astronomy Department, The University of Birmingham