The Wide-Field Imager for IXO: Status and future activities

Lothar Strüder, Florian Aschauer, Mark Bautz, Luca Bombelli, David Burrows, Carlo Fiorini, George Fraser, Sven Herrmann, Eckhard Kendziorra, Markus Kuster, Thomas Laufa, Peter Lechner, Gerhard Lutz, Petra Majewski, Aline Meuris, Matteo Porro, Jonas Reiffers, Rainer Richter, Andrea Santangel, Heike SoltauAlexander Stefanescu, Chris Tenzer, Johannes Treisb, Hiroshi Tsunemi, Giulio De Vita, Jörn Wilms

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations


The Wide Field Imager (WFI) of the International X-ray Observatory (IXO) is an X-ray imaging spectrometer based on a large monolithic DePFET (Depleted P-channel Field Effect Transistor) Active Pixel Sensor. Filling an area of 10 × 10 cm2 with a format of 1024 × 1024 pixels it will cover a field of view of 18 arcmin. The pixel size of 100 × 100 μm 2 corresponds to a fivefold oversampling of the telescope's expected 5 arcsec point spread function. The WFI's basic DePFET structure combines the functionalities of sensor and integrated amplifier with nearly Fano-limited energy resolution and high efficiency from 100 eV to 15 keV. The development of dedicated control and amplifier ASICs allows for high frame rates up to 1 kHz and flexible readout modes. Results obtained with representative prototypes with a format of 256 × 256 pixels are presented.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2010
Subtitle of host publicationUltraviolet to Gamma Ray
StatePublished - 2010
EventSpace Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray - San Diego, CA, United States
Duration: Jun 28 2010Jul 2 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherSpace Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray
Country/TerritoryUnited States
CitySan Diego, CA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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