Both fabricated gratings were tested in the Littrow mounting at the Max-Planck-Institute for extraterrestrial Physics PANTER X-ray test facility to assess their performance. We have fabricated two off-plane gratings with blazed groove profiles via a technique which uses commonly available microfabrication processes, is easily scaled for mass production, and yields gratings customized for a given mission architecture. Off-plane gratings with blazed groove facets operated in the Littrow mounting can be used to achieve excellent throughput into orders achieving high resolutions. An X-ray grating spectrometer employing off-plane reflection gratings would be capable of meeting these performance criteria. Essential steps for completion of the seven focal plane detectors until satellite launch in 2012 will be itemized.įuture soft X-ray (10 - 50 Angstrom) spectroscopy missions require higher effective areas and resolutions to perform critical science that cannot be done by instruments on current missions. The most recent test results are reported here. We present a detailed description of the detector system and the current development status. The Lagrange point L2 was decided as new destination of the satellite instead of a low-Earth orbit (LEO). This considers also the recent change of the satellite's orbit. The detector development is focussed to fulfil the scientific specifications for detector performance under the constraints of all the mechanical, power, thermal and radiation hardness issues for space instrumentation. The mission was already approved by the responsible German and Russian space agencies. eROSITA will be accommodated on the new Russian Spectrum-RG satellite.
#Ccd detector chip side length imaging full#
This instrumentation will permit the exploration of the X-ray universe in the energy band from 0.3 keV up to 10 keV with a time resolution of 50 ms for a full image comprising 384 x 384 pixels. The space telescope will be equipped with an array of seven parallel oriented X-ray mirror systems of Wolter-I type and seven cameras, placed in their foci. Finally, a new X-ray PNCCD was designed again for a space telescope named eROSITA. After the satellite launch in 1999, the MPI Halbleiterlabor continued the detector development for various ground-based applications.
A special type of CCD, the so-called PNCCD, was originally developed for the focal plane camera of the XMMNewton space telescope.
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