************************************************************************ IERS Message No. 161 April 19, 2010 ************************************************************************ Digitized versions of IERS Technical Notes 1 to 28 As a joint effort of the IERS Central Bureau and the Center for Retrospective Digitization, Goettingen (GDZ), IERS Technical Notes Nos. 1 to 28 are now available for download at http://www.iers.org/TechnicalNotes The PDF files include the scans of each page in the foreground and the recognized text from optical character recognition (OCR) in the background. Sophisticated scanning techniques ensured a high quality of the images and a minimum of errors in the recognized text. The text can be searched, marked and copied. Therefore the files will also be found when searching at the IERS web site or with search machines like Google - after Google etc. will have included the files in their indexes, which may last some days or weeks. There are files including the complete contents of the books and also files for each chapter. More information about the Center for Retrospective Digitization, Goettingen, Germany, is available at http://gdz.sub.uni-goettingen.de/index.php?id=2&L=1 . Wolfgang Dick and Bernd Richter IERS Central Bureau ************************************************************************ IERS Messages are edited and distributed by the IERS Central Bureau. To subscribe or unsubscribe, please write to . Archives: http://www.iers.org/iers/publications/messages/ ************************************************************************