1. Radio frequency self-interference from a data processing centre at a radio telescope site

   • Roberto Ambrosini
   • Pietro Bolli
   • Mauro Roma

   Original Article 23 October 2009 Pages: 121 - 130

   

2. Advanced Fresnel X-ray telescopes for spectroscopic imaging

   • Christoph Braig
   • Peter Predehl

   Original Article Open access 19 November 2009 Pages: 131 - 155

   

3. A new concept for the combination of optical interferometers and high-resolution spectrographs

   • Simon Albrecht
   • Andreas Quirrenbach
   • Ramon Vink

   Original Article 10 December 2009 Pages: 157 - 186

   

4. Geiger avalanche photodiodes as tentative light detectors for VHE gamma ray astronomy

   • D. Pellion
   • K. Jradi
   • A. R. Bazer-Bachi

   Original Article 05 December 2009 Pages: 187 - 195